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

Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more

Terraform AWS provider

sbt, the interactive build tool

Mist. Browse and use Ðapps on the Ethereum network.

scikit-learn: machine learning in Python

:atom: The hackable text editor

A Python to C compiler

Bitcoin Core integration/staging tree

coala provides a unified command-line interface for linting and fixing all your code, regardless of the programming languages you use.

JRuby, an implementation of Ruby on the JVM

Get your data in RAM. Get compute close to data. Enjoy the performance.

Very spicy additions to the Java programming language.

N-D labeled arrays and datasets in Python

Official Go implementation of the Ethereum protocol

Repository for the Astropy core package

A lightweight, fast and extensible game server for Minecraft

Modular search for Django

Software to automate the management and configuration of any infrastructure or application at scale. Get access to the Salt software package repository here:

Mirror of Apache Spark

Certbot is EFF's tool to obtain certs from Let's Encrypt and (optionally) auto-enable HTTPS on your server. It can also act as a client for any other CA that uses the ACME protocol.

The Crystal Programming Language

Web Experience Toolkit (WET): Open source code library for building innovative websites that are accessible, usable, interoperable, mobile-friendly and multilingual. This collaborative open source project is led by the Government of Canada.

Yoast SEO for WordPress

:tropical_fish: Babel is a compiler for writing next generation JavaScript.

Image Processing SciKit (Toolbox for SciPy)

Chocolatey CLI

A generic system to build and distribute packages from sources in an automatic, consistent and reproducible way. Release your software for a wide range of operating systems and hardware architectures.

SuiteCRM - Open source CRM for the world

☁️ Nextcloud server, a safe home for all your data

ClickHouse is a free analytic DBMS for big data.

Simple collaboration from your desktop

Apache OpenWhisk is a serverless event-based programming service and an Apache Incubator project.

Redis is an in-memory database that persists on disk. The data model is key-value, but many different kind of values are supported: Strings, Lists, Sets, Sorted Sets, Hashes, HyperLogLogs, Bitmaps.

Notepad++ official repository

A virtual machine for executing programs written in Hack.

The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.

Scala Language Integrated Connection Kit

A bundler for javascript and friends. Packs many modules into a few bundled assets. Code Splitting allows to load parts for the application on demand. Through "loaders," modules can be CommonJs, AMD, ES6 modules, CSS, Images, JSON, Coffeescript, LESS, ...

🚀 Yet another project to get beginners contributing to open source 🔰

A curated list of awesome Python frameworks, libraries, software and resources

Next generation Brave browser for macOS, Windows, Linux, and eventually Android

the future face of osu!

wallabag is a self hostable application for saving web pages: Save and classify articles. Read them later. Freely.

Azure Container Service Engine - provision and deploy container orchestrators on Azure: Kubernetes, DC/OS, and Docker Swarm.

A privacy-aware, distributed, open source social network.

Creating delicious APIs for Django apps since 2010.

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

The source code that powers readthedocs.org

Tensors and Dynamic neural networks in Python with strong GPU acceleration

Netty project - an event-driven asynchronous network application framework