If you are a maintainer of open-source projects, add the label first-timers-only (or similar) to your project and list it here so that people can find it.
Legerity(label: good first issue) A framework for speeding up the development of automated UI tests for Windows, Android, iOS, and Web with Appium/Selenium on .NET.
Legerity for Uno Platform(label: good first issue) An extension framework to Legerity for speeding up the development of automated UI tests for Uno Platform applications with Appium/Selenium on .NET.
MvvmCross(label: first-timers-only) The .NET MVVM framework for cross-platform solutions, including Xamarin.iOS, Xamarin.Android, Windows and Mac.
Angular
Oppia(label: good first issue) Oppia is an open-source project whose aim is to empower learners across the globe by providing access to high-quality, engaging education. We envision a society in which access to high-quality education is a human right rather than a privilege.
Ansible
Exosphere(label: Good First Issue) Exosphere is a user-friendly client interface for OpenStack-based cloud systems.
C
Julia(label: good first issue) The Julia Programming Language - A high-level, high-performance dynamic language for technical computing.
Profanity(label: good first issue) Ncurses XMPP chat client.
C
Cake(label: Good-first-issue) Cake (C# Make) is a free and open source cross-platform build automation system with a C# DSL for tasks such as compiling code, copying files and folders, running unit tests, compressing files and building NuGet packages.
osu!(label: good first issue) Music game. Rhythm is just a click away!
Spectre.Console(label: good first issue) A .NET library that makes it easier to create beautiful console applications.
Uno Platform(label: good first issue) OSS project for creating pixel-perfect, single-source C# and XAML apps which run natively on iOS, Android, macOS, Linux and Web via WebAssembly.
C++
electron(label: good first issue) Build cross platform desktop apps with JavaScript, HTML, and CSS
F3D(label: good first issue) Fast and minimalist 3D viewer.
Godot Engine(label: good first issue) 2D and 3D cross-platform game engine. Also has C# and Python code.
Julia(label: good first issue) The Julia Programming Language - A high-level, high-performance dynamic language for technical computing.
MiniOB(label: good first issue) MiniOB is a compact database that assists developers in understanding the fundamental workings of a database(main language is Chinese).
MoveIt(label: good first issue) Easy-to-use open source robotics manipulation platform for developing commercial applications, prototyping designs, and benchmarking algorithms.
projectM(label: good first issue) A music visualizer library using OpenGL and GLSL. Has applications using Qt5, SDL, emscripten, iTunes, Kodi.
Roc Toolkit(label: help-wanted) A toolkit for real-time audio streaming over the network.
tensorflow(label: stat:contributions-welcome) Computation using data flow graphs for scalable machine learning
Yugabyte DB(label: good first issue) Distributed SQL database.
Clojure
Metabase(label: good first issue) Open source business intelligence and analytics platform
CSS
ImprovedTube(label: good first issue) A powerful but lightweight extension, to enrich your video experience & enable your content selection.
Dart
dart.dev(label: beginner) A website covering Dart language and common libraries, for developers of Dart libraries, web apps, server-side code, and mobile (Flutter) apps.
flutter(label: good first issue) Flutter is Google’s UI toolkit for building beautiful, natively compiled applications for mobile, web, desktop, and embedded devices from a single codebase.
OpenFoodFacts(label: good first issue) Collaborative, free and open database of food products from around the world. Scan barcode to get info or add a product
Elixir
Ecto(label: Level:Starter) Ecto is a database wrapper and language integrated query for Elixir
Elixir(label: Level:Starter) Elixir is a dynamic, functional language designed for building scalable and maintainable applications
Elm
Exosphere(label: Good First Issue) Exosphere is a user-friendly client interface for OpenStack-based cloud systems.
Go
Alda(label: low-hanging fruit) A music programming language for musicians. 🎶
containerd(label: exp/beginner) Industry-standard container runtime with an emphasis on simplicity, robustness and portability.
PureLB(label: n/a) Load-balancer orchestrator for Kubernetes that uses standard Linux networking and routing protocols.
script(label: good first issue) A Go library for doing the kind of tasks that shell scripts are good at: reading files, executing subprocesses, counting lines, matching strings, and so on. Beginners are very welcome and will get detailed code review and help through the PR process.
Terraform(label: good first issue) A tool for building, changing, and versioning infrastructure safely and efficiently.
TiDB(label: good first issue) A distributed scalable Hybrid Transactional and Analytical Processing (HTAP) database
utils(label: good first issue) Common Utilities library for Go
Haskell
Hasura GraphQL Engine(label: good first issue) Blazing fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.
Java
Catima - Android App(label: good first issue) Catima, a Loyalty Card & Ticket Manager for Android
Codename One(label: good first issue) Cross-platform mobile app development framework for Java developers
DSA(label: good first issue) DSA questions practising repo for Java developers
elasticsearch(label: good first issue) Open Source, Distributed, RESTful Search Engine.
JabRef(label: good first issue) Desktop application for managing literature references using modern Java features including JavaFX. Dedicated to code quality and constructive feedback: Each Pull Request is reviewed by two developers to provide high-quality feedback and to ensure high quality of new contributions.
OpenMetadata(label: good first issue) OpenMetadata is an all-in-one platform for data discovery, data quality, observability, governance, data lineage, and team collaboration.
QuestDB(label: Good first issue) Questdb is a fast open source SQL time series database.
TEAMMATES(label: good first issue) TEAMMATES is a free online tool for managing peer evaluations and other feedback paths of your students.
Trino (formerly Presto SQL)(label: good first issue) A distributed SQL query engine for big data. Ask for guidance on project’s Slack.
Wikimedia Commons Android App(label: good first issue) Allows users to upload pictures from their Android phone/tablet to Wikimedia Commons.
XWiki(label: onboarding) XWiki is a free wiki software platform written in Java with a design emphasis on extensibility. Beginners should follow the onboarding wiki.
zerocode(label: good first issue) API Automation without coding, easy JSON response assertions, Testing REST, SOAP, Kafka and Java/DB APIs, CI/Jenkins Friendly.
JavaScript
altair(label: good first issue) A beautiful feature-rich GraphQL Client for all platforms.
Ancient Beast(label: easy) Turn based strategy game where you 3d print a squad of creatures with unique abilities in order to defeat your enemies.
AVA(label: good-for-beginner) Futuristic test runner.
Babel(label: good first issue) A compiler for writing next generation JavaScript.
Fastify(label: good first issue) Fast and low overhead web framework, for Node.js.
freeCodeCamp(label: first-timers-only) Open source codebase and curriculum. Learn to code and help nonprofits.
Gatsby.js(label: good first issue) Build blazing fast, modern apps and websites with React.
Ghost(label: good first issue) Just a blogging platform
grommet(label: good first issue) a react-based framework that provides accessibility, modularity, responsiveness, and theming in a tidy package
Habitica(label: good first issue) Habitica is a gamified task manager, webapp and android/ios app, really wonderful atmosphere. Guidance for contributing here (mongo, express, vue, node stack for webapp)
HMPL(label: good first issue) Server-oriented customizable templating for JavaScript.
Hoppscotch(label: good first issue) A free, fast and beautiful API request builder.
HueHive(label: good first issue) An open source react native app iOS and android for color palette management
iD(label: new contributor opportunity) The easy-to-use OpenStreetMap editor in JavaScript.
ImprovedTube(label: good first issue) A powerful but lightweight extension, to enrich your video experience & enable your content selection.
Jasmine(label: good first issue) Simple JavaScript testing framework for browsers and node.js.
Jest(label: good first issue) A complete and easy to set up JavaScript testing solution.
Kinto.js(label: easy-pick) An offline-first JavaScript client leveraging the Kinto API for remote data synchronization.
Leaflet(label: good first issue) JavaScript library for mobile-friendly interactive maps.
material-ui(label: good first issue) React components for faster and easier web development. Build your own design system, or start with Material Design.
Mattermost(label: Good First Issue, Difficulty/1:Easy) Open source Slack-alternative in Golang and React Look for issues labelled ‘Up For Grabs’
Meteor(label: good first issue) Meteor is an ultra-simple environment for building modern web applications.
Mocha(label: good first issue) Javascript test framework for Node.js and the browser.
Moment.js(label: Up-For-Grabs) A lightweight JavaScript date library for parsing, validating, manipulating, and formatting dates.
name-suggestion-index(label: good first issue) Canonical common brand names for OpenStreetMap
NativeScript(label: good first issue) NativeScript is an open source framework for building truly native mobile apps with JavaScript. Use web skills, like Angular and Vue.js, FlexBox and CSS, and get native UI and performance on iOS and Android.
netlify-cms(label: good first issue) Open source content management for your git workflow.
Next.js(label: good first issue) A minimalistic framework for universal server-rendered React applications
Node.js core(label: good first issue) JavaScript runtime built on Chrome’s V8 JavaScript engine
nuclear(label: good first issue) Multiplatform music player that streams from free sources.
p5.js(label: good first issue) p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code and express themselves creatively on the web.
pixi.js(label: 🤩 Good First PR) A 2D JavaScript Renderer
PouchDB(label: help-wanted) PouchDB is a pocket-sized database.
ramda-adjunct(label: help-wanted) Ramda Adjunct is the most popular and most comprehensive set of functional utilities for use with Ramda, providing a variety of useful, well tested functions with excellent documentation.
Rawsec Cybersecurity Inventory(label: difficulty::easy) An inventory of tools and resources that aims to help people to find everything related to CyberSecurity.
React(label: good first issue) A declarative, efficient, and flexible JavaScript library for building user interfaces.
React Native(label: Good-first-issue) A framework for building native apps with React.
React server(label: good-first-contribution) React framework with server render for blazing fast page load and seamless transitions between pages in the browser.
React-content-loader(label: good first issue) Tool to create your own react-content-loader easily.
ReactiveSearch(label: good first issue-) A UI components library for Elasticsearch: Available for React, Vue and React Native.
reactjs.org(label: good first issue) The documentation website for reactjs
serverless(label: good first issue) The Serverless Framework
Storybook JS(label: good first issue) Storybook is a frontend workshop for building UI components and pages in isolation.
stryker(label: 👶 Good first issue) The JavaScript mutation testing framework
Superalgos(label: good first issue) A completely Open Source crypto trading bot rewarding good contributions with the SA(Superalgos)-Token.
Svelte(label: good first issue) Component framework that runs at build time, converting your components into highly efficient imperative code that surgically updates the DOM.
swag-for-dev(label: good first issue) Swag opportunities for developers.
The Odin Project Curriculum(label: See Description) An open-source curriculum for learning full-stack web development. There are a few “Type: Good First Issue” labelled issues, but any content addition/deletion issues seem reasonably beginner friendly.
Time to Leave(label: good first issue) Working hours time tracker app based on Electron and Javascript.
Vest(label: good first issue) Validations framework inspired by unit testing frameworks.
Video Hub App(label: good first issue) Angular & Electron app for browsing and searching videos on your PC.
Video.js(label: good first issue) The player framework
Vite(label: good first issue) Next generation frontend tooling. It’s fast! Alternative to Create React App
Vue Router(label: good first issue) The official router for Vue.js.
Vue.js(label: good first issue) The Progressive JavaScript Framework.
VuePress(label: good first issue) Minimalistic Vue-powered static site generator
webdriver.io(label: first-timers-only) Next-gen browser and mobile automation test framework for Node.js
Javascript
appsmith(label: good first issue) Drag & Drop internal tool builder
JSON
Rawsec Cybersecurity Inventory(label: difficulty::easy) An inventory of tools and resources that aims to help people to find everything related to CyberSecurity.
Julia
Julia(label: good first issue) The Julia Programming Language - A high-level, high-performance dynamic language for technical computing.
Kotlin
Atrium(label: good first issue) Multiplatform assertion library for Kotlin
Hexagon(label: help-wanted) A microservices toolkit written in Kotlin
Non-Blocking SirixDB HTTP(S)-Server(label: good first issue) A non-blocking HTTP(S)-Server for SirixDB, a temporal, evolutionary NoSQL document store for XML and JSON.
OpenCalc(label: good first issue) A simple and beautiful calculator for Android.
Scribe-Android(label: good first issue) Android keyboards for language learners with translation, verb conjugation and more!
Markdown
The Odin Project Curriculum(label: See Description) An open-source curriculum for learning full-stack web development. There are a few “Type: Good First Issue” labelled issues, but any content addition/deletion issues seem reasonably beginner friendly.
tldr-pages(label: help-wanted) Collaborative cheatsheets for console commands.
MLOps
SuperDuperDB(label: good first issue) 🔮SuperDuperDB: Bring AI to your favourite database! Integrate, train and manage any AI models and APIs directly with your database and your data
Perl
Ravada(label: good first issue) Remote Virtual Desktops Manager.
PHP
Appwrite(label: good first issue) An End-to-end backend server for frontend and mobile developers. 🚀
CodeIgniter(label: good first issue) A lightweight, fast PHP framework, it is easy to install and perfect for learning MVC architecture.
Deployer(label: good-for-beginner) A deployment tool written in PHP with support for popular frameworks out of the box.
Drupal(label: n/a) Leading open-source CMS for ambitious digital experiences that reach your audience across multiple channels.
Flarum(label: Good-first-issue) Simple forum software for building great communities.
FreshRSS(label: good first issue) FreshRSS is a self-hosted RSS and Atom feed aggregator. It is lightweight, easy to work with, powerful, and customizable. Since 2012.
Laravel Newsletters(label: good first issue) A package that provides an easy way to integrate MailChimp with Laravel 5.
Matomo(label: help-wanted) Matomo is the leading Free/Libre open analytics platform.
MediaWiki(label: n/a) The free and open-source wiki software package that powers Wikipedia.
NextCloud Server(label: good first issue) Nextcloud server, a safe home for all your data.
OrgManager(label: beginners-only) Supercharge your GitHub organizations!
PHP Censor(label: good-for-beginner) Open source self-hosted continuous integration server for PHP projects.
phpMyAdmin(label: newbie) Admin interface for MySQL written in PHP.
PrestaShop(label: good first issue) The open source ecommerce solution to start your online business and start selling online.
Symfony(label: good first issue) Symfony is a PHP framework for web applications and a set of reusable PHP components.
Pug
Rawsec Cybersecurity Inventory(label: difficulty::easy) An inventory of tools and resources that aims to help people to find everything related to CyberSecurity.
Python
activist(label: good first issue) activist.org is a network for political action that allows people to coordinate and collaborate on the issues that matter most to them.
Ansible(label: easyfix) A simple IT automation platform
ArviZ(label: Beginner) Exploratory Analysis of Bayesian Models.
Bokeh(label: good first issue) Bokeh is an interactive visualization library for modern web browsers.
BorgBackup(label: easy) Deduplicating backup program with compression and authenticated encryption.
CiviWiki(label: good first issue) Building a Better Democracy for the Internet Age
Colossal-AI(label: good first issue) An open-source deep learning system for large-scale model training and inference with high efficiency and low cost.
cookiecutter(label: good first issue) A command-line utility that creates projects from cookiecutters (project templates). E.g. Python package projects, jQuery plugin projects.
datascience(label: good first issue) A Jupyter notebook Python library for introductory data science.
Devopness(label: good first issue) Deploy any software to any cloud: automated DevOps workflows to save software teams time and money.
django cookiecutter(label: hacktoberfest) An implementation of Python for backend web development.
DocsGPT(label: good first issue) Open-source RAG assistant that helps users get reliable answers from knowledge sources while avoiding hallucinations.
Embedchain(label: good first issue) Embedchain is a framework to easily create LLM powered bots over any dataset.
Fabric(label: Low-hanging-fruit) Pythonic remote execution and deployment.
FastAPI(label: good first issue) A modern, fast (high-performance) web framework for building APIs with Python 3.6+ based on standard Python type hints.
H2O Wave(label: good first issue) Realtime Web Apps and Dashboards framework for Python and R. Suited (not only) for AI audience.
Harmony(label: Good First Issue) Natural language processing tool for psychologists to analyse and compare datasets with AI and LLMs. Up for a challenge? Try this LLM training competition for a chance to win up to £500!
jarvis(label: difficulty/newcomer) A personal assistant for Linux, MacOs and Windows based on Command line Interface.
Jupyter notebook(label: good first issue) Jupyter interactive notebook.
Kinto(label: easy-pick) A lightweight JSON storage service with synchronisation and sharing abilities.
matplotlib(label: good first issue) Matplotlib is a comprehensive library for creating static, animated, and interactive visualizations in Python.
MindsDB(label: good first issue) MindsDB is an open source AI layer for existing databases.
mitmproxy(label: help-wanted) An interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers
mygpo(label: starter-issue) The webservice for gpodder.net, a libre web service that allows users to manage their podcast subscriptions and discover new content.
mypy(label: good first issue) Optional static typing for Python.
OMRChecker(label: good first issue) OMRChecker helps to grade exams fast and accurately using a scanner 🖨 or your phone 🤳. Learn image processing with Python and OpenCV while contributing to one of the most popular repositories related to OMR topic on github.
OpenMetadata(label: good first issue) OpenMetadata is an all-in-one platform for data discovery, data quality, observability, governance, data lineage, and team collaboration.
Oppia(label: good first issue) Oppia is an open-source project whose aim is to empower learners across the globe by providing access to high-quality, engaging education. We envision a society in which access to high-quality education is a human right rather than a privilege.
opsdroid(label: good first issue) An open source chat-ops bot framework.
pandas(label: good first issue) Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more
PyMC(label: beginner friendly) A Python library for Bayesian statistical modeling and probabilistic machine learning. Beginner-friendly with ‘good first issue’ labels.
Pytest(label: status:-easy) The pytest framework makes it easy to write small tests, yet scales to support complex functional testing.
Python Babel(label: difficulty/low) The Python Internationalization Library.
Pytorch(label: good first issue) PyTorch is an open source machine learning library based on the Torch library, used for applications such as computer vision and natural language processing.
SaltStack(label: good first issue) Software to automate the management and configuration of any infrastructure or application at scale.
scikit-learn(label: good first issue) Scikit-learn is a machine learning library for Python.
scrapy(label: good first issue) A fast high-level web crawling & scraping framework for Python.
SuperDuperDB(label: good first issue) 🔮SuperDuperDB: Bring AI to your favourite database! Integrate, train and manage any AI models and APIs directly with your database and your data
SymPy(label: Easy-to-Fix) A Python library for symbolic mathematics.
wemake-python-styleguide(label: level:starter) The strictest and most opinionated python linter ever!
Zulip(label: good first issue) Powerful open source group chat.
JRuby(label: beginner) An implementation of Ruby on the Java Virtual Machine.
mapknitter(label: first-timers-only) Upload your own aerial images, position (rubbersheet) them in a web interface over existing map data, and share via web or composite and export for print.
multiwoven(label: good first issue) The open-source reverse ETL, data activation platform for modern data teams.
ohai(label: Type:-Jump-In) Ohai profiles your system and emits JSON
open-build-service(label: good first issue-:1st_place_medal:) A generic system to build and distribute packages from sources in an automatic, consistent and reproducible way.
osem(label: good first issue) Open Source Event Manager. An event management tool tailored to Free and Open Source Software conferences
Ruby on Rails(label: good first issue) Ruby on Rails (Rails) is an open source web application framework written in Ruby.
Sinatra(label: good first issue) Classy web-development dressed in a DSL.
Rust
a-b-street(label: good first issue) Transportation planning and traffic simulation software for creating cities friendlier to walking, biking, and public transit.
dotenv-linter(label: good first issue) Lightning-fast linter for .env files. Written in Rust
Hyper(label: E-easy) A fast, safe and correct low-level HTTP library for Rust.
nushell(label: good first issue) A modern shell for the GitHub era written in Rust.
Ockam(label: good first issue) End-to-end encryption and mutual authentication for distributed applications.
Pyrefly(label: good first issue) A fast Python typechecker and IDE written in Rust.
Readest(label: good first issue) A modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface.
Rust-Clippy(label: good first issue) A bunch of lints to catch common mistakes and improve Rust code
Rustfmt(label: good first issue) A tool for formatting Rust code according to style guidelines.
Servo(label: E-easy) A browser engine designed for applications including embedded use.
Sniffnet(label: good first issue) Application to comfortably monitor network traffic.
TensorZero(label: good-first-issue) TensorZero creates a feedback loop for optimizing LLM applications — turning production data into smarter, faster, and cheaper models.
TiKV(label: difficulty/easy) A distributed transactional key-value database
Veloren(label: n/a) Veloren is a multiplayer voxel RPG written in Rust.
zoom-rs(label: good first issue) Teleconference system with a web based user interface written in Rust
Scala
playframework(label: good first issue) The High Velocity Web Framework
Twitter Util(label: good first issue) Wonderful reusable code from Twitter
Smalltalk
Pharo(label: good first issue) A dynamic reflective pure object-oriented language supporting live programming inspired by Smalltalk.
Swift
Basic-Car-Maintenance(label: good first issue) A basic app to track your car’s maintenance events, like fixes, oil changes, etc.
TypeScript
activist(label: good first issue) activist.org is a network for political action that allows people to coordinate and collaborate on the issues that matter most to them.
Amplication(label: good first issue) Amplication is an open-source development tool. It helps you develop quality Node.js applications without spending time on repetitive coding tasks.
Booster(label: good first issue) A truly serverless framework, write your code and deploy it in seconds without any server configuration files.
Devopness(label: good first issue) Deploy any software to any cloud: automated DevOps workflows to save software teams time and money.
DocsGPT(label: good first issue) Open-source RAG assistant that helps users get reliable answers from knowledge sources while avoiding hallucinations.
Graphback(label: good first issue) A CLI and runtime framework to generate a GraphQL API in seconds.
H2O Wave(label: good first issue) Realtime Web Apps and Dashboards framework for Python and R. Suited (not only) for AI audience.
Hasura GraphQL Engine(label: good first issue) Blazing fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.
Impler.io(label: good first issue) 100% open source data import experience with readymade CSV & Excel import widget 🚀
IterTools TS(label: good first issue) Extended itertools port for TypeScript and JavaScript. Provides a huge set of functions for working with iterable collections (including async ones).
LinksHub(label: good first issue) LinksHub aims to provide developers with access to a wide range of free resources and tools that they can use in their work.
LitmusChaos(label: good first issue) Litmus is a toolset to do cloud-native chaos engineering.
Manifest(label: good first issue) Manifest is an open-source Backend-as-a-Service allowing developers to create a backend easily and quickly.
Metabase(label: good first issue) Open source business intelligence and analytics platform
OpenMetadata(label: good first issue) OpenMetadata is an all-in-one platform for data discovery, data quality, observability, governance, data lineage, and team collaboration.
Oppia(label: good first issue) Oppia is an open-source project whose aim is to empower learners across the globe by providing access to high-quality, engaging education. We envision a society in which access to high-quality education is a human right rather than a privilege.
Readest(label: good first issue) A modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface.
reatom(label: good first issue) Reatom is declarative and reactive state manager, designed for both simple and complex applications.
Storybook JS(label: good first issue) Storybook is a frontend workshop for building UI components and pages in isolation.
supabase(label: good first issue) The open source Firebase alternative. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.
tinyhttp(label: good first issue) A 0-legacy, tiny & fast web framework as a replacement of Express.
TypeScript(label: good first issue) A superset of JavaScript that compiles to clean JavaScript output.
typescript-eslint(label: good first issue) Monorepo for all the tooling which enables ESLint to support TypeScript.
Visual Studio Code(label: good first issue) A code editor redefined and optimized for building and debugging modern web and cloud applications.
Vite(label: good first issue) Next generation frontend tooling. It’s fast! Alternative to Create React App
Vitest(label: good first issue) A blazing fast unit test framework powered by Vite.
Typescript
appsmith(label: good first issue) Drag & Drop internal tool builder
Awesome First Pull Request Opportunities
Inspired by First Timers Only blog post.
If you are a maintainer of open-source projects, add the label
first-timers-only(or similar) to your project and list it here so that people can find it.If you are not a programmer but would like to contribute, check out the Awesome for non-programmers list.
If you would like to be guided through how to contribute to a repository on GitHub, check out the First Contributions repository.
Table of Contents:
.NET
A framework for speeding up the development of automated UI tests for Windows, Android, iOS, and Web with Appium/Selenium on .NET.
An extension framework to Legerity for speeding up the development of automated UI tests for Uno Platform applications with Appium/Selenium on .NET.
The .NET MVVM framework for cross-platform solutions, including Xamarin.iOS, Xamarin.Android, Windows and Mac.
Angular
Oppia is an open-source project whose aim is to empower learners across the globe by providing access to high-quality, engaging education. We envision a society in which access to high-quality education is a human right rather than a privilege.
Ansible
Exosphere is a user-friendly client interface for OpenStack-based cloud systems.
C
The Julia Programming Language - A high-level, high-performance dynamic language for technical computing.
Ncurses XMPP chat client.
C
Cake (C# Make) is a free and open source cross-platform build automation system with a C# DSL for tasks such as compiling code, copying files and folders, running unit tests, compressing files and building NuGet packages.
Music game. Rhythm is just a click away!
A .NET library that makes it easier to create beautiful console applications.
OSS project for creating pixel-perfect, single-source C# and XAML apps which run natively on iOS, Android, macOS, Linux and Web via WebAssembly.
C++
Build cross platform desktop apps with JavaScript, HTML, and CSS
Fast and minimalist 3D viewer.
2D and 3D cross-platform game engine. Also has C# and Python code.
The Julia Programming Language - A high-level, high-performance dynamic language for technical computing.
MiniOB is a compact database that assists developers in understanding the fundamental workings of a database(main language is Chinese).
Easy-to-use open source robotics manipulation platform for developing commercial applications, prototyping designs, and benchmarking algorithms.
A music visualizer library using OpenGL and GLSL. Has applications using Qt5, SDL, emscripten, iTunes, Kodi.
A toolkit for real-time audio streaming over the network.
Computation using data flow graphs for scalable machine learning
Distributed SQL database.
Clojure
Open source business intelligence and analytics platform
CSS
A powerful but lightweight extension, to enrich your video experience & enable your content selection.
Dart
A website covering Dart language and common libraries, for developers of Dart libraries, web apps, server-side code, and mobile (Flutter) apps.
Flutter is Google’s UI toolkit for building beautiful, natively compiled applications for mobile, web, desktop, and embedded devices from a single codebase.
Collaborative, free and open database of food products from around the world. Scan barcode to get info or add a product
Elixir
Ecto is a database wrapper and language integrated query for Elixir
Elixir is a dynamic, functional language designed for building scalable and maintainable applications
Elm
Exosphere is a user-friendly client interface for OpenStack-based cloud systems.
Go
A music programming language for musicians. 🎶
Industry-standard container runtime with an emphasis on simplicity, robustness and portability.
The Docker CLI
Provide efficient, stable and secure file distribution and image acceleration based on p2p technology
The Kubernetes Package Manager
A Fast and Flexible Static Site Generator built with love in GoLang
A Data Protection Workflow Management Engine
Production-Grade Container Scheduling and Management System
System container and virtual machine manager.
Open source Slack-alternative in Golang and React
Look for issues labelled ‘Up For Grabs’
Meshery, the service mesh management plane.
Open-source application container engine
Load-balancer orchestrator for Kubernetes that uses standard Linux networking and routing protocols.
A Go library for doing the kind of tasks that shell scripts are good at: reading files, executing subprocesses, counting lines, matching strings, and so on. Beginners are very welcome and will get detailed code review and help through the PR process.
A tool for building, changing, and versioning infrastructure safely and efficiently.
A distributed scalable Hybrid Transactional and Analytical Processing (HTAP) database
Common Utilities library for Go
Haskell
Blazing fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.
Java
Catima, a Loyalty Card & Ticket Manager for Android
Cross-platform mobile app development framework for Java developers
DSA questions practising repo for Java developers
Open Source, Distributed, RESTful Search Engine.
Desktop application for managing literature references using modern Java features including JavaFX. Dedicated to code quality and constructive feedback: Each Pull Request is reviewed by two developers to provide high-quality feedback and to ensure high quality of new contributions.
OpenMetadata is an all-in-one platform for data discovery, data quality, observability, governance, data lineage, and team collaboration.
Questdb is a fast open source SQL time series database.
TEAMMATES is a free online tool for managing peer evaluations and other feedback paths of your students.
A distributed SQL query engine for big data. Ask for guidance on project’s Slack.
Allows users to upload pictures from their Android phone/tablet to Wikimedia Commons.
XWiki is a free wiki software platform written in Java with a design emphasis on extensibility. Beginners should follow the onboarding wiki.
API Automation without coding, easy JSON response assertions, Testing REST, SOAP, Kafka and Java/DB APIs, CI/Jenkins Friendly.
JavaScript
A beautiful feature-rich GraphQL Client for all platforms.
Turn based strategy game where you 3d print a squad of creatures with unique abilities in order to defeat your enemies.
Futuristic test runner.
A compiler for writing next generation JavaScript.
Fast, reliable, and secure dependency management.
The only sane way to build great bots.
Desktop browser for macOS, Windows, and Linux.
Check It Out is an ncurses-like CLI to let the user interactively navigate and select a git branch to check out.
Create React apps with no build configuration.
Fast, easy and reliable testing for anything that runs in a browser.
Build cross platform desktop apps with JavaScript, HTML, and CSS
A JavaScript framework for creating ambitious web applications.
A data persistence library for Ember.js.
A fully pluggable tool for identifying and reporting on patterns in JavaScript.
Awesome ESLint rules.
Fast and low overhead web framework, for Node.js.
Open source codebase and curriculum. Learn to code and help nonprofits.
Build blazing fast, modern apps and websites with React.
Just a blogging platform
a react-based framework that provides accessibility, modularity, responsiveness, and theming in a tidy package
Habitica is a gamified task manager, webapp and android/ios app, really wonderful atmosphere. Guidance for contributing here (mongo, express, vue, node stack for webapp)
Server-oriented customizable templating for JavaScript.
A free, fast and beautiful API request builder.
An open source react native app iOS and android for color palette management
The easy-to-use OpenStreetMap editor in JavaScript.
A powerful but lightweight extension, to enrich your video experience & enable your content selection.
Simple JavaScript testing framework for browsers and node.js.
A complete and easy to set up JavaScript testing solution.
An offline-first JavaScript client leveraging the Kinto API for remote data synchronization.
JavaScript library for mobile-friendly interactive maps.
React components for faster and easier web development. Build your own design system, or start with Material Design.
Open source Slack-alternative in Golang and React
Look for issues labelled ‘Up For Grabs’
Meteor is an ultra-simple environment for building modern web applications.
Javascript test framework for Node.js and the browser.
A lightweight JavaScript date library for parsing, validating, manipulating, and formatting dates.
Canonical common brand names for OpenStreetMap
NativeScript is an open source framework for building truly native mobile apps with JavaScript. Use web skills, like Angular and Vue.js, FlexBox and CSS, and get native UI and performance on iOS and Android.
Open source content management for your git workflow.
A minimalistic framework for universal server-rendered React applications
JavaScript runtime built on Chrome’s V8 JavaScript engine
Multiplatform music player that streams from free sources.
p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code and express themselves creatively on the web.
A 2D JavaScript Renderer
PouchDB is a pocket-sized database.
Ramda Adjunct is the most popular and most comprehensive set of functional utilities for use with Ramda, providing a variety of useful, well tested functions with excellent documentation.
An inventory of tools and resources that aims to help people to find everything related to CyberSecurity.
A declarative, efficient, and flexible JavaScript library for building user interfaces.
A framework for building native apps with React.
React framework with server render for blazing fast page load and seamless transitions between pages in the browser.
Tool to create your own react-content-loader easily.
A UI components library for Elasticsearch: Available for React, Vue and React Native.
The documentation website for reactjs
The Serverless Framework
Storybook is a frontend workshop for building UI components and pages in isolation.
The JavaScript mutation testing framework
A completely Open Source crypto trading bot rewarding good contributions with the SA(Superalgos)-Token.
Component framework that runs at build time, converting your components into highly efficient imperative code that surgically updates the DOM.
Swag opportunities for developers.
An open-source curriculum for learning full-stack web development. There are a few “Type: Good First Issue” labelled issues, but any content addition/deletion issues seem reasonably beginner friendly.
Working hours time tracker app based on Electron and Javascript.
Validations framework inspired by unit testing frameworks.
Angular & Electron app for browsing and searching videos on your PC.
The player framework
Next generation frontend tooling. It’s fast! Alternative to Create React App
The official router for Vue.js.
The Progressive JavaScript Framework.
Minimalistic Vue-powered static site generator
Next-gen browser and mobile automation test framework for Node.js
Javascript
Drag & Drop internal tool builder
JSON
An inventory of tools and resources that aims to help people to find everything related to CyberSecurity.
Julia
The Julia Programming Language - A high-level, high-performance dynamic language for technical computing.
Kotlin
Multiplatform assertion library for Kotlin
A microservices toolkit written in Kotlin
A non-blocking HTTP(S)-Server for SirixDB, a temporal, evolutionary NoSQL document store for XML and JSON.
A simple and beautiful calculator for Android.
Android keyboards for language learners with translation, verb conjugation and more!
Markdown
An open-source curriculum for learning full-stack web development. There are a few “Type: Good First Issue” labelled issues, but any content addition/deletion issues seem reasonably beginner friendly.
Collaborative cheatsheets for console commands.
MLOps
🔮SuperDuperDB: Bring AI to your favourite database! Integrate, train and manage any AI models and APIs directly with your database and your data
Perl
Remote Virtual Desktops Manager.
PHP
An End-to-end backend server for frontend and mobile developers. 🚀
A lightweight, fast PHP framework, it is easy to install and perfect for learning MVC architecture.
A deployment tool written in PHP with support for popular frameworks out of the box.
Leading open-source CMS for ambitious digital experiences that reach your audience across multiple channels.
Simple forum software for building great communities.
FreshRSS is a self-hosted RSS and Atom feed aggregator. It is lightweight, easy to work with, powerful, and customizable. Since 2012.
A package that provides an easy way to integrate MailChimp with Laravel 5.
Matomo is the leading Free/Libre open analytics platform.
The free and open-source wiki software package that powers Wikipedia.
Nextcloud server, a safe home for all your data.
Supercharge your GitHub organizations!
Open source self-hosted continuous integration server for PHP projects.
Admin interface for MySQL written in PHP.
The open source ecommerce solution to start your online business and start selling online.
Symfony is a PHP framework for web applications and a set of reusable PHP components.
Pug
An inventory of tools and resources that aims to help people to find everything related to CyberSecurity.
Python
activist.org is a network for political action that allows people to coordinate and collaborate on the issues that matter most to them.
A simple IT automation platform
Exploratory Analysis of Bayesian Models.
Bokeh is an interactive visualization library for modern web browsers.
Deduplicating backup program with compression and authenticated encryption.
Building a Better Democracy for the Internet Age
An open-source deep learning system for large-scale model training and inference with high efficiency and low cost.
A command-line utility that creates projects from cookiecutters (project templates). E.g. Python package projects, jQuery plugin projects.
A Jupyter notebook Python library for introductory data science.
Deploy any software to any cloud: automated DevOps workflows to save software teams time and money.
An implementation of Python for backend web development.
Open-source RAG assistant that helps users get reliable answers from knowledge sources while avoiding hallucinations.
Embedchain is a framework to easily create LLM powered bots over any dataset.
Pythonic remote execution and deployment.
A modern, fast (high-performance) web framework for building APIs with Python 3.6+ based on standard Python type hints.
Realtime Web Apps and Dashboards framework for Python and R. Suited (not only) for AI audience.
Natural language processing tool for psychologists to analyse and compare datasets with AI and LLMs.
Up for a challenge? Try this LLM training competition for a chance to win up to £500!
A personal assistant for Linux, MacOs and Windows based on Command line Interface.
Jupyter interactive notebook.
A lightweight JSON storage service with synchronisation and sharing abilities.
Matplotlib is a comprehensive library for creating static, animated, and interactive visualizations in Python.
MindsDB is an open source AI layer for existing databases.
An interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers
The webservice for gpodder.net, a libre web service that allows users to manage their podcast subscriptions and discover new content.
Optional static typing for Python.
OMRChecker helps to grade exams fast and accurately using a scanner 🖨 or your phone 🤳. Learn image processing with Python and OpenCV while contributing to one of the most popular repositories related to OMR topic on github.
OpenMetadata is an all-in-one platform for data discovery, data quality, observability, governance, data lineage, and team collaboration.
Oppia is an open-source project whose aim is to empower learners across the globe by providing access to high-quality, engaging education. We envision a society in which access to high-quality education is a human right rather than a privilege.
An open source chat-ops bot framework.
Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more
A Python library for Bayesian statistical modeling and probabilistic machine learning. Beginner-friendly with ‘good first issue’ labels.
The pytest framework makes it easy to write small tests, yet scales to support complex functional testing.
The Python Internationalization Library.
PyTorch is an open source machine learning library based on the Torch library, used for applications such as computer vision and natural language processing.
Software to automate the management and configuration of any infrastructure or application at scale.
Scikit-learn is a machine learning library for Python.
A fast high-level web crawling & scraping framework for Python.
🔮SuperDuperDB: Bring AI to your favourite database! Integrate, train and manage any AI models and APIs directly with your database and your data
A Python library for symbolic mathematics.
The strictest and most opinionated python linter ever!
Powerful open source group chat.
Ruby
Build business apps 10x faster using Ruby on Rails.
Opensource customer support platform which can be an alternative to Intercom, Zendesk, Drift, Crisp etc.
A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure
A modern framework for Ruby.
An implementation of Ruby on the Java Virtual Machine.
Upload your own aerial images, position (rubbersheet) them in a web interface over existing map data, and share via web or composite and export for print.
The open-source reverse ETL, data activation platform for modern data teams.
Ohai profiles your system and emits JSON
A generic system to build and distribute packages from sources in an automatic, consistent and reproducible way.
Open Source Event Manager. An event management tool tailored to Free and Open Source Software conferences
Ruby on Rails (Rails) is an open source web application framework written in Ruby.
Classy web-development dressed in a DSL.
Rust
Transportation planning and traffic simulation software for creating cities friendlier to walking, biking, and public transit.
Lightning-fast linter for .env files. Written in Rust
A fast, safe and correct low-level HTTP library for Rust.
A modern shell for the GitHub era written in Rust.
End-to-end encryption and mutual authentication for distributed applications.
A fast Python typechecker and IDE written in Rust.
A modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface.
A bunch of lints to catch common mistakes and improve Rust code
A tool for formatting Rust code according to style guidelines.
A browser engine designed for applications including embedded use.
Application to comfortably monitor network traffic.
TensorZero creates a feedback loop for optimizing LLM applications — turning production data into smarter, faster, and cheaper models.
A distributed transactional key-value database
Veloren is a multiplayer voxel RPG written in Rust.
Teleconference system with a web based user interface written in Rust
Scala
The High Velocity Web Framework
Wonderful reusable code from Twitter
Smalltalk
A dynamic reflective pure object-oriented language supporting live programming inspired by Smalltalk.
Swift
A basic app to track your car’s maintenance events, like fixes, oil changes, etc.
TypeScript
activist.org is a network for political action that allows people to coordinate and collaborate on the issues that matter most to them.
Amplication is an open-source development tool. It helps you develop quality Node.js applications without spending time on repetitive coding tasks.
Fast, reliable, and secure dependency management.
A truly serverless framework, write your code and deploy it in seconds without any server configuration files.
Deploy any software to any cloud: automated DevOps workflows to save software teams time and money.
Open-source RAG assistant that helps users get reliable answers from knowledge sources while avoiding hallucinations.
A CLI and runtime framework to generate a GraphQL API in seconds.
Realtime Web Apps and Dashboards framework for Python and R. Suited (not only) for AI audience.
Blazing fast, instant realtime GraphQL APIs on Postgres with fine grained access control, also trigger webhooks on database events.
100% open source data import experience with readymade CSV & Excel import widget 🚀
Extended itertools port for TypeScript and JavaScript. Provides a huge set of functions for working with iterable collections (including async ones).
LinksHub aims to provide developers with access to a wide range of free resources and tools that they can use in their work.
Litmus is a toolset to do cloud-native chaos engineering.
Manifest is an open-source Backend-as-a-Service allowing developers to create a backend easily and quickly.
Open source business intelligence and analytics platform
OpenMetadata is an all-in-one platform for data discovery, data quality, observability, governance, data lineage, and team collaboration.
Oppia is an open-source project whose aim is to empower learners across the globe by providing access to high-quality, engaging education. We envision a society in which access to high-quality education is a human right rather than a privilege.
A modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface.
Reatom is declarative and reactive state manager, designed for both simple and complex applications.
Storybook is a frontend workshop for building UI components and pages in isolation.
The open source Firebase alternative. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.
A 0-legacy, tiny & fast web framework as a replacement of Express.
A superset of JavaScript that compiles to clean JavaScript output.
Monorepo for all the tooling which enables ESLint to support TypeScript.
A code editor redefined and optimized for building and debugging modern web and cloud applications.
Next generation frontend tooling. It’s fast! Alternative to Create React App
A blazing fast unit test framework powered by Vite.
Typescript
Drag & Drop internal tool builder
Contribute
Contributions are welcome! See the contributing guidelines.
Thanks to GitHub Sponsors
Thanks to Warp.dev for sponsoring this repository through a donation to a charity of my choice.
Michał Gołkowski
License
To the extent possible under law, the author has waived all copyrights and related or neighboring rights to this work.