Linux kernel source tree
C
Tools whose repository GitHub reports as mostly C.
151 tools
Microsoft PowerToys is a collection of utilities that supercharge productivity and customization on Windows
- Language
- C
- Licence
- MIT
- Stars
- 141k
- Latest
- v0.102.3101
- Last push
- 2026-11-12
OBS Studio - Free and open source software for live streaming and screen recording
For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.
Mirror of https://git.ffmpeg.org/ffmpeg.git
Git Source Code Mirror - This is a publish-only repository but pull requests can be turned into patches to the mailing list via GitGitGadget (https://gitgitgadget.github.io/). Please follow Documentation/SubmittingPatches procedure for any of your improvements.
tmux source code
A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, MQTTS, POP3, POP3S, RTSP, SCP, SFTP, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features
- Language
- C
- Licence
- Other
- Stars
- 43k
- Latest
- curl-8_23_0
- Last push
- 2026-11-12
🎥 Command line media player
Command-line JSON processor
A simple and easy-to-use library to enjoy videogames programming
The official NGINX Open Source repository.
- Language
- C
- Licence
- BSD-2-Clause
- Stars
- 32k
- Latest
- release-1.31.8
- Last push
- 2026-11-09
General purpose TLS and crypto library
- Language
- C
- Licence
- Apache-2.0
- Stars
- 31k
- Latest
- openssl-4.1.0
- Last push
- 2026-11-11
This repository is a mirror of https://git.openwrt.org/openwrt/openwrt.git It is for reference only and is not active for check-ins. We will continue to accept Pull Requests here. They will be merged via staging trees then into openwrt.git.
Zstandard - Fast real-time compression algorithm
A flexible distributed key-value database that is optimized for caching and other realtime workloads.
- Language
- C
- Licence
- BSD-3-Clause
- Stars
- 28k
- Latest
- 9.1.3
- Last push
- 2026-11-12
World's fastest and most advanced password recovery utility
A code-searching tool similar to ack, but faster.
- Language
- C
- Licence
- Apache-2.0
- Stars
- 27k
- Latest
- 2.2.0
- Last push
- 2024-06-16
UNIX-like reverse engineering framework and command-line toolset
High-performance, scalable time-series database designed for Industrial IoT (IIoT) scenarios
- Language
- C
- Licence
- AGPL-3.0
- Stars
- 25k
- Latest
- ver-3.4.3.9
- Last push
- 2026-11-07
Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
HandBrake's development repository
A time-series database for high-performance real-time analytics packaged as a Postgres extension
Open-source vector similarity search for Postgres
Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Submitting_a_Patch
n³ The unorthodox terminal file manager
- Language
- C
- Licence
- BSD-2-Clause
- Stars
- 22k
- Latest
- v5.3
- Last push
- 2026-11-01
GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through your browser.
VLC media player - plays everything, runs anywhere. Code here: https://code.videolan.org/videolan/vlc
ImageMagick is a free, open-source software suite for creating, editing, converting, and displaying images. It supports 200+ formats and offers powerful command-line tools and APIs for automation, scripting, and integration across platforms.
Lightweight static analysis for many languages. Find bug variants with patterns that look like source code.
i3-compatible Wayland compositor
libSQL is a fork of SQLite that is both Open Source, and Open Contributions.
- Language
- C
- Licence
- MIT
- Stars
- 17k
- Latest
- libsql-server-v0.24.32
- Last push
- 2026-11-07
Rofi: A window switcher, application launcher and dmenu replacement
Beyond file syncing and sharing, a new way to organize your files with extensible file properties and flexible views
OpenVPN is an open source VPN daemon
coturn TURN server project
- Language
- C
- Licence
- Other
- Stars
- 15k
- Latest
- docker/4.18.0-r0
- Last push
- 2026-11-10
memcached development tree
- Language
- C
- Licence
- BSD-3-Clause
- Stars
- 14k
- Latest
- 1.6.45
- Last push
- 2026-09-11
High Performance Web Platform Based on Nginx and LuaJIT
A modern, portable, easy to use crypto library.
- Language
- C
- Licence
- Other
- Stars
- 14k
- Latest
- 1.0.22-RELEASE
- Last push
- 2026-11-11
Official QEMU mirror. Please see https://www.qemu.org/contribute/ for how to submit changes to QEMU. Pull Requests are disabled. Please only use release tarballs from the QEMU website.
Nmap - the Network Mapper. Github mirror of official SVN repository.
John the Ripper jumbo - advanced offline password cracker, which supports hundreds of hash and cipher types, and runs on many operating systems, CPUs, GPUs, and even some FPGAs
Cross-platform multi-protocol VPN software. Pull requests are welcome. The stable version is available at https://github.com/SoftEtherVPN/SoftEtherVPN_Stable.
- Language
- C
- Licence
- Apache-2.0
- Stars
- 14k
- Latest
- 5.2.5189
- Last push
- 2026-11-05
darktable is an open source photography workflow application and raw developer
- Language
- C
- Licence
- GPL-3.0
- Stars
- 13k
- Latest
- release-5.6.2
- Last push
- 2026-11-11
A high-performance web server and reverse proxy, 100% compatible with nginx.
- Language
- C
- Licence
- BSD-2-Clause
- Stars
- 13k
- Latest
- 3.1.0
- Last push
- 2026-09-07
Text-mode interface for git
Distributed PostgreSQL as an extension
Disk encryption with strong security based on TrueCrypt
- Language
- C
- Licence
- Other
- Stars
- 12k
- Latest
- VeraCrypt_1.26.31
- Last push
- 2026-11-10
Klipper is a 3d-printer firmware
H2O - the optimized HTTP/1, HTTP/2, HTTP/3 server
- Language
- C
- Licence
- MIT
- Stars
- 12k
- Latest
- tag-no-more-releases
- Last push
- 2026-11-12
Eclipse Mosquitto - An open source MQTT broker
GPU & Accelerator process monitoring for AMD, Apple, Huawei, Intel, NVIDIA and Qualcomm
Official Git mirror of the SQLite source tree
- Language
- C
- Licence
- Other
- Stars
- 11k
- Latest
- version-3.54.1
- Last push
- 2026-11-12
YugabyteDB - the cloud native distributed SQL database for mission-critical applications.
- Language
- C
- Licence
- Other
- Stars
- 11k
- Latest
- v2026.1.3.0
- Last push
- 2026-11-12
A tiling window manager for X11
- Language
- C
- Licence
- BSD-3-Clause
- Stars
- 11k
- Latest
- 4.25.1
- Last push
- 2026-11-01
Read-only mirror of Wireshark's Git repository at https://gitlab.com/wireshark/wireshark. You're welcome to submit pull requests there.
The pattern matching swiss knife
- Language
- C
- Licence
- BSD-3-Clause
- Stars
- 10k
- Latest
- v4.6.0
- Last push
- 2026-10-27
The FreeBSD src tree publish-only repository. Experimenting with 'simple' pull requests....
- Language
- C
- Licence
- Other
- Stars
- 9.5k
- Latest
- release/14.5.0
- Last push
- 2026-11-12
Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on your computer.
Janus WebRTC Server
iperf3: A TCP, UDP, and SCTP network bandwidth measurement tool
htop - an interactive process viewer
Fast and Lightweight Logs, Metrics and Traces processor for Linux, BSD, OSX and Windows
- Language
- C
- Licence
- Apache-2.0
- Stars
- 8.2k
- Latest
- v5.2.0
- Last push
- 2026-11-11
Mirror of CMake upstream repository
- Language
- C
- Licence
- BSD-3-Clause
- Stars
- 8.2k
- Latest
- v4.4.5
- Last push
- 2026-11-12
Free (libre) font editor for Windows, Mac OS X and GNU+Linux
Arkime is an open source, large scale, full packet capturing, indexing, and database system.
- Language
- C
- Licence
- Apache-2.0
- Stars
- 7.6k
- Latest
- v6.9.1
- Last push
- 2026-11-12
ClamAV - Documentation is here: https://docs.clamav.net
- Language
- C
- Licence
- GPL-2.0
- Stars
- 7.5k
- Latest
- clamav-1.5.4
- Last push
- 2026-11-06
HAProxy Load Balancer's development branch (mirror of git.haproxy.org)
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine developed by the OISF and the Suricata community.
- Language
- C
- Licence
- GPL-2.0
- Stars
- 6.9k
- Latest
- suricata-8.0.8
- Last push
- 2026-11-11
Read-only mirror of https://gitlab.gnome.org/GNOME/gimp
- Language
- C
- Licence
- Other
- Stars
- 6.6k
- Latest
- GIMP_3_2_8
- Last push
- 2026-11-11
Siege is an http load tester and benchmarking utility
Instant Terminal Sharing
Lossy PNG compressor — pngquant command based on libimagequant library
Run arbitrary commands when files change
Graphics Creation Tools
An open source utility that provides fast incremental file transfer. It also has useful features for backup and restore operations among many other use cases.
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device.
LXC - Linux Containers
Gluster Filesystem : Build your distributed storage in minutes
A modernized, complete, self-contained TeX/LaTeX engine, powered by XeTeX and TeXLive.
- Language
- C
- Licence
- Other
- Stars
- 5.2k
- Latest
- tectonic@0.17.0
- Last push
- 2026-08-01
eBPF-based Security Observability and Runtime Enforcement
- Language
- C
- Licence
- Apache-2.0
- Stars
- 5.2k
- Latest
- v1.8.0
- Last push
- 2026-11-11
Linux application sandboxing and distribution framework
OSSEC is an Open Source Host-based Intrusion Detection System that performs log analysis, file integrity checking, policy monitoring, rootkit detection, real-time alerting and active response.
Unbound is a validating, recursive, and caching DNS resolver.
- Language
- C
- Licence
- BSD-3-Clause
- Stars
- 5.1k
- Latest
- release-1.26.2
- Last push
- 2026-11-11
Book Reader for Android
Graph database optimized for fast analysis and real-time data processing. It is provided as an extension to PostgreSQL.
- Language
- C
- Licence
- Apache-2.0
- Stars
- 4.9k
- Latest
- PG18/v1.8.0-rc0
- Last push
- 2026-11-04
Keepalived
MPC-BE – универсальный проигрыватель аудио и видеофайлов для операционной системы Windows.
Reliable PostgreSQL Backup & Restore
- Language
- C
- Licence
- Other
- Stars
- 4.5k
- Latest
- release/2.60.0
- Last push
- 2026-11-11
lightweight connection pooler for PostgreSQL
- Language
- C
- Licence
- Other
- Stars
- 4.4k
- Latest
- pgbouncer_1_26_1
- Last push
- 2026-11-06
GnuCash Double-Entry Accounting Program.
Mirror of the Z shell source code repository.
OrioleDB – building a modern cloud-native storage engine (... and solving some PostgreSQL wicked problems)
- Language
- C
- Licence
- Apache-2.0
- Stars
- 4.3k
- Latest
- v1.10.3
- Last push
- 2026-11-11
A fast and lightweight fully featured OCI runtime and C library for running containers
UNIX-like reverse engineering framework and command-line toolset.
Free and open source hybrid synthesizer as a virtual instrument (previously released by Vember Audio as Surge)
Portable OpenSSH
Apache HTTP Server
- Language
- C
- Licence
- Apache-2.0
- Stars
- 4k
- Latest
- 2.4.71
- Last push
- 2026-11-11
The Apache Guacamole proxy daemon (guacd), C API (libguac), and protocol support.
- Language
- C
- Licence
- Apache-2.0
- Stars
- 4k
- Latest
- 1.6.0
- Last push
- 2026-11-03
✉️ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat
A fast and lightweight IDE
The official Asterisk Project repository.
Premake
- Language
- C
- Licence
- BSD-3-Clause
- Stars
- 3.7k
- Latest
- v5.0.0
- Last push
- 2026-11-10
Scalable PostgreSQL connection manager
- Language
- C
- Licence
- BSD-3-Clause
- Stars
- 3.6k
- Latest
- v1.5.2
- Last push
- 2026-11-11
The extensible chat client.
The system statistics collection daemon. Please send Pull Requests here!
- Language
- C
- Licence
- Other
- Stars
- 3.4k
- Latest
- collectd-5.12.0
- Last push
- 2026-10-27
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 TCPdump network dissector
- Language
- C
- Licence
- Other
- Stars
- 3.3k
- Latest
- tcpdump-4.99.7
- Last push
- 2026-11-11
The client of the future
strongSwan - IPsec-based VPN
Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalability
strace is a diagnostic, debugging and instructional userspace utility for Linux
An ultra-lightweight and blazing-fast Messaging Bus/MQTT Broker for Edge & SDV
Angie - drop-in replacement for nginx
- Language
- C
- Licence
- BSD-2-Clause
- Stars
- 2.6k
- Latest
- Angie-1.12.4
- Last push
- 2026-11-10
Audio server that can play to AirPlay 1+2 speakers (multiroom), Chromecast and locally. Supports Spotify, internet radio and many file formats. Also MPD server, iTunes DAAP, smart playlists, Apple Remote and much more.
Rapid spam filtering system.
syslog-ng is an enhanced log daemon, supporting a wide range of input and output methods: syslog, unstructured text, queueing, SQL & NoSQL.
- Language
- C
- Licence
- Other
- Stars
- 2.4k
- Latest
- syslog-ng-4.12.0
- Last push
- 2026-11-11
High-performance log ingestion and ETL engine
a VPN daemon
- Language
- C
- Licence
- Other
- Stars
- 2.3k
- Latest
- release-1.0.37
- Last push
- 2026-06-27
3D CAD application
Nagios Core
- Language
- C
- Licence
- GPL-2.0
- Stars
- 2.1k
- Latest
- nagios-4.5.14
- Last push
- 2026-10-27
DeaDBeeF Player
XZ Utils
An oldschool sample-based music composition tool.
Ncurses based XMPP client
OpenSIPS is a GPL implementation of a multi-functionality SIP Server that targets to deliver a high-level technical solution (performance, security and quality) to be used in professional SIP server platforms.
A simple GTK+ frontend for mpv
Source code for Oracle VirtualBox
One advanced and mature open-source MPP (Massively Parallel Processing) database. Open source alternative to Greenplum Database.
- Language
- C
- Licence
- Apache-2.0
- Stars
- 1.4k
- Latest
- 2.2.0-incubating
- Last push
- 2026-11-12
free and open source voxel art tools - editor, thumbnailer and format converter
Postgres extension and service for automated failover and high-availability
Aerospike Database Server – flash-optimized, in-memory, nosql database
A collaborative drawing program
A breadth-first version of the UNIX find command
Dovecot mail server
Store and access data published by OwnTracks apps
Open Source Oracle Compatible PostgreSQL.
- Language
- C
- Licence
- Apache-2.0
- Stars
- 1.1k
- Latest
- IvorySQL_5.6
- Last push
- 2026-11-11
Midnight Commander's repository
Avidemux2, simple video editor
UrBackup - Client/Server Open Source Network Backup for Windows, MacOS and Linux
aide source code
Mirror of Apache Subversion
- Language
- C
- Licence
- Apache-2.0
- Stars
- 654
- Latest
- 1.15.0
- Last push
- 2026-11-08
Cyrus IMAP is an email, contacts and calendar server
- Language
- C
- Licence
- Other
- Stars
- 653
- Latest
- cyrus-imapd-3.12.4
- Last push
- 2026-11-11
raw photography workflow that sucks less
- Language
- C
- Licence
- BSD-2-Clause
- Stars
- 635
- Latest
- 1.0.0
- Last push
- 2026-11-11
This is official OpenSMTPD Portable repository. Forks, pull requests and other contributions are welcome!
The NLnet Labs Name Server Daemon (NSD) is an authoritative, RFC compliant DNS nameserver.
- Language
- C
- Licence
- BSD-3-Clause
- Stars
- 574
- Latest
- NSD_4_15_4_REL
- Last push
- 2026-11-06
CFEngine Community
Todo application for those who prefer simplicity.
Official UnrealIRCd repository. Downloads are available from our site
Kurento WebRTC Media Server
- Language
- C
- Licence
- Apache-2.0
- Stars
- 442
- Latest
- 7.3.0
- Last push
- 2026-10-15
The enterprise-class Open Source LDAP server for Linux
- Language
- C
- Licence
- Other
- Stars
- 300
- Latest
- 389-ds-base-3.3.1
- Last push
- 2026-11-11