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

CrowdSec - the open-source and participative security solution offering crowdsourced protection against malicious IPs and access to the most advanced real-world CTI.

hub helps you win at git.

Fast, cross-platform HTTP/2 web server with automatic HTTPS

Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS

Elegant Facebook Messenger desktop app

Create amazing 360 and VR content using React

Rust parser combinator framework

Keep your application settings in sync (OS X/Linux)

Free and open-source social network for active citizenship.

:bookmark_tabs: A better OneTab for Chrome :memo: Temporarily removed from firefox :construction: V2 is WIP

Open-source compositing software. Node-graph based. Similar in functionalities to Adobe After Effects and Nuke by The Foundry.

Easily make RESTful web services for time series reporting with Big Data analytics engines like Druid and SQL Databases.

Efficient data transformation and modeling framework that is backwards compatible with dbt.

Care is a Digital Public Good enabling TeleICU & Decentralised Administration of Healthcare Capacity across States.

🙃 A delightful community-driven (with 2,200+ contributors) framework for managing your zsh configuration. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python, etc), 140+ themes to spice up your morning, and an aut

The most customizable typing website with a minimalistic design and a ton of features. Test yourself in various modes, track your progress and improve your speed.

bottle.py is a fast and simple micro-framework for python web-applications.

The uncompromising Python code formatter

Cross-platform lib for process and system monitoring in Python

Web app for visualizing pathogen evolution

OpenRocket simulation software

🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

Cross-platform framework for building truly native mobile apps with Java or Kotlin. Write Once Run Anywhere support for iOS, Android, Desktop & Web.

Scala language server with rich IDE features 🚀

Bitfocus Companion enables the reasonably priced Elgato Streamdeck and other controllers to be a professional shotbox surface for an increasing amount of different presentation switchers, video playback software and broadcast equipment.

Friendly machine learning for the web! 🤖

最好用的 V2Ray 一键安装脚本 & 管理脚本

A Ruby language server.

Expressive, robust, feature-rich CSS language built for nodejs

Open-source, cloud-native transactional tensor storage engine

:books: Simplified and community-driven man pages

The continuation of the venerable JA2-Stracciatella project.

a structural diff that understands syntax 🟥🟩

Open Dylan compiler and IDE

The core infrastructure backend (API, database, Docker, etc).

🏆 Java4You Design patterns

The open-source Devin alternative. Run Claude Code, Codex or OpenCode in isolated cloud workspaces you can self-host.

Abseil Common Libraries (C++)

Lightweight, modular, and extensible library for functional programming.

A Creative Coding Framework for Rust.

Multi-platform transparent client-side encryption of your files in the cloud

MGen: Windows PC C++ algorithmic music generator laboratory, playing into MIDI port and exporting MIDI

The Wren Programming Language. Wren is a small, fast, class-based concurrent scripting language.

NUnit Framework

The fastai deep learning library

Augmentative and Alternative Communication (AAC) system with text-to-speech for the browser

Lizzie - Leela Zero Interface

libheif is a ISO/IEC 23008-12:2017 HEIF file format decoder and encoder.

OpenMMLab Pre-training Toolbox and Benchmark

A powerful little TUI framework 🏗