Top C GitHub Repositories & Open Source Projects (2026)

Cross-platform, sophisticated frontend for the libretro API. Licensed GPLv3.

Ruby AOT compiler

VLC media player - plays everything, runs anywhere. Code here: https://code.videolan.org/videolan/vlc

A macOS menu-bar app that dresses your windows in knitted borders.

Open Source Inertial Navigation Library

Clock using lib ncurses

FreeRADIUS - A multi-protocol policy server.

Capturing SSL/TLS plaintext without a CA certificate using eBPF. Supported on Linux/Android kernels for amd64/arm64.

Text-mode interface for git

Lightweight Ruby

Vifm is a file manager with curses interface, which provides Vim-like environment for managing objects within file systems, extended with some useful ideas from mutt.

The Rubinius Language Platform

A fast streaming JSON parsing library in C.

libharu - free PDF library

FFXIV plugin framework and API

System Information Gatherer And Reporter

Main repository for Csound

Small strings compression library

The Rhodes framework is a platform for building locally executing, device-optimized mobile applications for all major smartphone devices.

A portable framework for low-level network packet construction