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Starred repositories

40 stars written in C
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Linux kernel source tree

C 211,648 59,557 Updated Dec 24, 2025

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.

C 72,244 24,393 Updated Dec 23, 2025

Mirror of https://git.ffmpeg.org/ffmpeg.git

C 55,729 13,310 Updated Dec 24, 2025

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, POP3, POP3S, RTMP, RTMPS, RTSP…

C 40,226 6,996 Updated Dec 24, 2025

TLS/SSL and crypto library

C 29,259 10,971 Updated Dec 23, 2025

The official NGINX Open Source repository.

C 28,917 7,696 Updated Dec 24, 2025

Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.

C 13,984 8,420 Updated Dec 24, 2025

OpenVPN is an open source VPN daemon

C 12,966 3,230 Updated Dec 24, 2025

Official QEMU mirror. Please see https://www.qemu.org/contribute/ for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website.

C 12,442 6,411 Updated Dec 23, 2025

RT-Thread is an open source IoT Real-Time Operating System (RTOS). https://rt-thread.github.io/rt-thread/

C 11,633 5,325 Updated Dec 24, 2025

Eclipse Mosquitto - An open source MQTT broker

C 10,453 2,567 Updated Dec 12, 2025

Read-only mirror of Wireshark's Git repository at https://gitlab.com/wireshark/wireshark. ⚠️ GitHub won't let us disable pull requests. ⚠️ THEY WILL BE IGNORED HERE ⚠️ Upload them at GitLab instead.

C 8,817 2,076 Updated Dec 24, 2025

Official Git mirror of the SQLite source tree

C 8,794 1,369 Updated Dec 24, 2025

iperf3: A TCP, UDP, and SCTP network bandwidth measurement tool

C 8,134 1,388 Updated Dec 19, 2025

'Classic' FreeRTOS distribution. Started as Git clone of FreeRTOS SourceForge SVN repo. Submodules the kernel.

C 6,779 1,910 Updated Dec 22, 2025

A massively spiffy yet delicately unobtrusive compression library.

C 6,566 2,664 Updated Dec 8, 2025

An open source, portable, easy to use, readable and flexible TLS library, and reference implementation of the PSA Cryptography API. Releases are on a varying cadence, typically around 3 - 6 months …

C 6,358 2,819 Updated Dec 18, 2025

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine developed by the OISF and the Suricata community.

C 5,874 1,643 Updated Dec 24, 2025

Open Source Deep Packet Inspection Software Toolkit

C 4,290 964 Updated Dec 24, 2025

GNU toolchain for RISC-V, including GCC

C 4,284 1,331 Updated Dec 18, 2025

Data Plane Development Kit

C 4,043 1,401 Updated Dec 24, 2025

Portable OpenSSH

C 3,625 1,989 Updated Dec 22, 2025

Apache NuttX is a mature, real-time embedded operating system (RTOS)

C 3,603 1,422 Updated Dec 24, 2025

Eclipse ThreadX is an advanced real-time operating system (RTOS) designed specifically for deeply embedded applications.

C 3,326 894 Updated Nov 27, 2025

the TCPdump network dissector

C 3,085 905 Updated Dec 24, 2025

the LIBpcap interface to various kernel packet capture mechanism

C 3,017 913 Updated Dec 24, 2025

Open5GS is a C-language Open Source implementation for 5G Core and EPC, i.e. the core network of LTE/NR network (Release-17)

C 2,368 944 Updated Dec 23, 2025

An Eclipse Paho C client library for MQTT for Windows, Linux and MacOS. API documentation: https://eclipse-paho.github.io/paho.mqtt.c/

C 2,234 1,158 Updated Dec 18, 2025

tiny, portable SOCKS5 server with very moderate resource usage

C 1,919 322 Updated Feb 12, 2025

CMSIS Version 5 Development Repository

C 1,548 1,108 Updated Sep 3, 2024
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