Help out your favorite open source projects and become a better developer while doing it.

Nix, the purely functional package manager

Ballerina is a compiled, transactional, statically and strongly typed programming language with textual and graphical syntaxes.

📦🐈 Fast, reliable, and secure dependency management.

Novel Coronavirus (COVID-19) Cases, provided by JHU CSSE

A privacy-first, open-source platform for knowledge management and collaboration. Desktop app download link: https://github.com/logseq/logseq/releases, roadmap: https://trello.com/b/8txSM12G/roadmap

matplotlib: plotting with Python

Create React apps with no build configuration.

Create React apps with no build configuration.

ORM for TypeScript and JavaScript (ES7, ES6, ES5). Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, SAP Hana, WebSQL databases. Works in NodeJS, Browser, Ionic, Cordova and Electron platforms.

Notepad++ official repository

The official bug tracker for the Scala programming language.

Material Design components for Angular

Component infrastructure and Material Design components for Angular

Style and Grammar Checker for 25+ Languages

An open source re-implementation of RollerCoaster Tycoon 2 🎢

Terraform is a tool for building, changing, and combining infrastructure safely and efficiently.

Scipy library main repository

Node.js JavaScript runtime :sparkles::turtle::rocket::sparkles:

Entity Framework Core is a lightweight and extensible version of the popular Entity Framework data access technology

Scalable datastore for metrics, events, and real-time analytics

Mixxx is Free DJ software that gives you everything you need to perform live mixes.

Vim-fork focused on extensibility and usability

Free universal database tool and SQL client

NumPy aware dynamic Python compiler using LLVM

Cocos2d-x is a suite of open-source, cross-platform, game-development tools used by millions of developers all over the world.

A bunch of lints to catch common mistakes and improve your Rust code

A bunch of lints to catch common mistakes and improve your Rust code

The new Windows Terminal, and the original Windows console host -- all in the same place!

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

SuiteCRM - Open source CRM for the world

Official repository for IPython itself. Other repos in the IPython organization contain things like the website, documentation builds, etc.

Framework for server-rendered React apps

The React Framework

Apache Superset (incubating) is a modern, enterprise-ready business intelligence web application

Apache Superset is a Data Visualization and Data Exploration Platform

The Crystal Programming Language

The Crystal Programming Language

Synapse: Matrix reference homeserver

TrinityCore Open Source MMO Framework (master = 7.3.5.26124, 3.3.5 = 3.3.5a.12340)

Open Source Identity and Access Management For Modern Applications and Services

Microsoft Azure SDK for Java

Complete Open Source and Modular solution for MMO

Open source robotics simulator.

Spring Framework

Official upstream development repository for Cabal and cabal-install

GirlScript Winter of Contributing is a three-month-long Open-Source Program organized by🧡GirlScript Foundation to create the world's largest multilingual content repository that will be available to everyone.

A place to report bugs on websites.

Theia is a cloud & desktop IDE framework implemented in TypeScript.