Roaring bitmaps in C (and C++), with SIMD (AVX2, AVX-512 and NEON) optimizations: used by Apache Doris, ClickHouse, Alibaba Tair, Redpanda, YDB and StarRocks

A lightweight cross-platform getopt alternative that is tested on Linux, Windows, FreeBSD and macOS. Command line argument parser library for C/C++. Can be used to parse argv and argc parameters.

A tiny, neat C library that portably invokes native file open and save dialogs.

An IMAP/POP/SMTP proxy that transparently adds OAuth 2.0 authentication for email clients that don't support this method. Keep legacy email clients working with Exchange Online, Gmail and other pro…

Efficient C++ implementation of the Cassowary constraint solving algorithm

Unleash your creativity with Pixelorama, a powerful and accessible open-source pixel art multitool. Whether you want to create sprites, tiles, animations, or just express yourself in the language o…

👾 Modern and minimalist pixel editor

A highly efficient, move-aware operators library

2D Vector Graphics Engine Powered by a JIT Compiler

UTF-8 with C++ in a Portable Way

contiguous container library - arrays with customizable allocation, small buffer optimization and more

A C++11/OpenGL library for the Fast Fourier Transform

Unicode-based scientific plotting for working in the terminal

A simple command line parser for C++14

A small self-contained alternative to readline and libedit that supports UTF-8 and Windows and is BSD licensed.

A C++20 unit test framework

H2O - the optimized HTTP/1, HTTP/2, HTTP/3 server

MIDI-USB Support for Arduino

a header-only, constexpr alternative to gperf for C++14 users

Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one

Fast NFS server implemented using GoJournal

Protect your SSH keys with your Mac's Secure Enclave

Overlay networks based on WebRTC.

Connect your devices into a secure WireGuard®-based overlay network with SSO, MFA and granular access controls.

Open source framework for building robust type-safe distributed systems with declarative infrastructure

Ready-to-use SRT / WebRTC / RTSP / RTMP / LL-HLS / MPEG-TS / RTP media server and media proxy that allows to read, publish, proxy, record and playback video and audio streams.