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482 stars written in C
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The fastest path to AI-powered full stack observability, even for lean teams.

C 77,074 6,269 Updated Dec 19, 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 72,195 24,391 Updated Dec 19, 2025

tmux source code

C 40,212 2,342 Updated Dec 19, 2025

Modern HTTP benchmarking tool

C 39,913 3,032 Updated Dec 30, 2023

Command-line JSON processor

C 33,208 1,682 Updated Dec 17, 2025

stb single-file public domain libraries for C/C++

C 30,853 7,939 Updated Oct 25, 2025

TLS/SSL and crypto library

C 29,240 10,968 Updated Dec 19, 2025

A code-searching tool similar to ack, but faster.

C 27,162 1,437 Updated Jun 16, 2024

Zstandard - Fast real-time compression algorithm

C 26,248 2,358 Updated Dec 19, 2025

UNIX-like reverse engineering framework and command-line toolset

C 22,774 3,151 Updated Dec 20, 2025

BCC - Tools for BPF-based Linux IO analysis, networking, monitoring, and more

C 22,065 4,030 Updated Dec 11, 2025

MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems

C 21,237 8,595 Updated Dec 19, 2025

A time-series database for high-performance real-time analytics packaged as a Postgres extension

C 21,153 1,015 Updated Dec 19, 2025

GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in *nix systems or through your browser.

C 20,066 1,171 Updated Oct 26, 2025

Beyond file syncing and sharing, a new way to organize your files with extensible file properties and flexible views

C 14,087 1,622 Updated Dec 19, 2025

memcached development tree

C 14,077 3,323 Updated Dec 17, 2025

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

C 13,954 8,403 Updated Dec 20, 2025

A modern, portable, easy to use crypto library.

C 13,251 1,834 Updated Dec 9, 2025

Text-mode interface for git

C 13,004 637 Updated Dec 6, 2025

Cross-platform multi-protocol VPN software. Pull requests are welcome. The stable version is available at https://github.com/SoftEtherVPN/SoftEtherVPN_Stable.

C 12,821 2,722 Updated Dec 6, 2025

Embedded web server, with TCP/IP network stack, MQTT and Websocket

C 12,421 2,871 Updated Dec 19, 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 12,416 6,400 Updated Dec 17, 2025

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

C 12,407 2,405 Updated Dec 12, 2025

A fast, light-weight proxy for memcached and redis

C 12,330 2,049 Updated Mar 29, 2024

mimalloc is a compact general purpose allocator with excellent performance.

C 12,287 1,034 Updated Dec 10, 2025

AddressSanitizer, ThreadSanitizer, MemorySanitizer

C 12,250 1,080 Updated Dec 12, 2025

Distributed PostgreSQL as an extension

C 12,137 740 Updated Dec 19, 2025

Embed the Power of Lua into NGINX HTTP servers

C 11,692 2,060 Updated Dec 17, 2025

Extremely Fast Compression algorithm

C 11,522 1,496 Updated Dec 15, 2025

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

C 11,345 878 Updated Dec 15, 2025
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