C Trending

nginx /

nginx

#3

The official NGINX Open Source repository.

pbatard /

rufus

#5

The Reliable USB Formatting Utility

redis /

redis

#12

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.

califio /

publications

#1

Publications from Calif

zephyrproject-rtos /

zephyr

#18

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

openssl /

openssl

#15

General purpose TLS and crypto library

lvgl /

lvgl

#10

Embedded graphics library to create beautiful UIs for any MCU, MPU and display type.

xarray /

osgverse

#6

osgVerse, a complete 3d engine solution based on OpenSceneGraph. It supports OpenGL/OpenGLES/Vulkan/DirectX/Metal backends, and also works on modern browsers using WASM.

darktable-org /

darktable

#2

darktable is an open source photography workflow application and raw developer

micropython /

micropython

#11

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

redcanaryco /

atomic-red-team

#4

Small and highly portable detection tests based on MITRE's ATT&CK.

SchedMD /

slurm

#14

Slurm: A Highly Scalable Workload Manager

openwall /

john

#9

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

RT-Thread /

rt-thread

#16

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

DPDK /

dpdk

#8

Data Plane Development Kit

FRRouting /

frr

#17

The FRRouting Protocol Suite

madler /

zlib

#13

A massively spiffy yet delicately unobtrusive compression library.

littlefs-project /

littlefs

#7

A little fail-safe filesystem designed for microcontrollers

openssh /

openssh-portable

#19

Portable OpenSSH

califio /

publications

#1

Publications from Calif

DeusData /

codebase-memory-mcp

#16

High-performance code intelligence MCP server. Indexes codebases into a persistent knowledge graph — average repo in milliseconds. 158 languages, sub-ms queries, 99% fewer tokens. Single static binary, zero dependencies.

redis /

redis

#15

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.

git /

git

#5

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.

nginx /

nginx

#2

The official NGINX Open Source repository.

lvgl /

lvgl

#18

Embedded graphics library to create beautiful UIs for any MCU, MPU and display type.

valkey-io /

valkey

#13

A flexible distributed key-value database that is optimized for caching and other realtime workloads.

capstone-engine /

capstone

#19

Capstone disassembly/disassembler framework for ARM, ARM64 (ARMv8), Alpha, BPF, Ethereum VM, HPPA, LoongArch, M68K, M680X, Mips, MOS65XX, PPC, RISC-V(rv32G/rv64G), SH, Sparc, SystemZ, TMS320C64X, TriCore, Webassembly, XCore and X86.

DarkFlippers /

unleashed-firmware

#12

Flipper Zero Unleashed Firmware

facebook /

zstd

#11

Zstandard - Fast real-time compression algorithm

openssl /

openssl

#17

General purpose TLS and crypto library

Mbed-TLS /

mbedtls

#14

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 between releases.

hathach /

tinyusb

#10

An open source cross-platform USB stack for embedded system

zanfranceschi /

rinha-de-backend-2026

#9

Rinha de Backend - Quarta Edição: Detecção de Fraude com Busca Vetorial

lz4 /

lz4

#20

Extremely Fast Compression algorithm

libuv /

libuv

#4

Cross-platform asynchronous I/O

tianocore /

edk2

#7

EDK II

FRRouting /

frr

#8

The FRRouting Protocol Suite

wolfSSL /

wolfssl

#3

The wolfSSL library is a small, fast, portable implementation of TLS/SSL for embedded devices to the cloud. wolfSSL supports up to TLS 1.3 and DTLS 1.3! Update to wolfSSL 5.9.1 for the latest CVE fixes.

RsyncProject /

rsync

#1

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.

xiaojieonly /

Ehviewer_CN_SXJ

#14

ehviewer，用爱发电，快乐前行

dorianborian /

sesame-robot

#5

An open and affordable mini quadruped robot based on ESP32.

netdata /

netdata

#11

The fastest path to AI-powered full stack observability, even for lean teams.

kingToolbox /

WindTerm

#19

A professional cross-platform SSH/Sftp/Shell/Telnet/Tmux/Serial terminal.

lvgl /

lvgl

#20

Embedded graphics library to create beautiful UIs for any MCU, MPU and display type.

timescale /

timescaledb

#8

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

facebook /

zstd

#3

Zstandard - Fast real-time compression algorithm

zephyrproject-rtos /

zephyr

#18

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

zanfranceschi /

rinha-de-backend-2026

#2

Rinha de Backend - Quarta Edição: Detecção de Fraude com Busca Vetorial

espressif /

esp-idf

#16

Espressif IoT Development Framework. Official development framework for Espressif SoCs.

jqlang /

jq

#12

Command-line JSON processor

openssl /

openssl

#10

General purpose TLS and crypto library

RT-Thread /

rt-thread

#9

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

DaveGamble /

cJSON

#7

Ultralightweight JSON parser in ANSI C

DPDK /

dpdk

#21

Data Plane Development Kit

21cncstudio /

project_aura

#17

ESP32‑S3 air‑quality station with LVGL UI, MQTT, Home Assistant

FRRouting /

frr

#15

The FRRouting Protocol Suite

eclipse-mosquitto /

mosquitto

#13

Eclipse Mosquitto - An open source MQTT broker

Mbed-TLS /

mbedtls

#4

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 between releases.

sonic-net /

sonic-buildimage

#6

Scripts which perform an installable binary image build for SONiC

xiaojieonly /

Ehviewer_CN_SXJ

#5

ehviewer，用爱发电，快乐前行

DeusData /

codebase-memory-mcp

#6

High-performance code intelligence MCP server. Indexes codebases into a persistent knowledge graph — average repo in milliseconds. 158 languages, sub-ms queries, 99% fewer tokens. Single static binary, zero dependencies.

RsyncProject /

rsync

#3

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.

valkey-io /

valkey

#12

A flexible distributed key-value database that is optimized for caching and other realtime workloads.

zephyrproject-rtos /

zephyr

#4

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

vanhauser-thc /

thc-hydra

#10

hydra

pgvector /

pgvector

#13

Open-source vector similarity search for Postgres

86Box /

86Box

#7

Emulator of x86-based machines.

FreeRTOS /

FreeRTOS-Kernel

#1

FreeRTOS kernel files only, submoduled into https://github.com/FreeRTOS/FreeRTOS and various other repos.

allinurl /

goaccess

#8

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

RfidResearchGroup /

ChameleonUltra

#17

The new generation chameleon based on NRF52840 makes the performance of card emulation more stable. And gave the chameleon the ability to read, write, and decrypt cards.

eclipse-mosquitto /

mosquitto

#16

Eclipse Mosquitto - An open source MQTT broker

RT-Thread /

rt-thread

#18

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

openssl /

openssl

#14

General purpose TLS and crypto library

OpenTenBase /

OpenTenBase

#9

OpenTenBase is an enterprise-level distributed HTAP open source database.

DaveGamble /

cJSON

#2

Ultralightweight JSON parser in ANSI C

SchedMD /

slurm

#15

Slurm: A Highly Scalable Workload Manager

libuv /

libuv

#11

Cross-platform asynchronous I/O

RsyncProject /

rsync

#1

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.

xiaojieonly /

Ehviewer_CN_SXJ

#6

ehviewer，用爱发电，快乐前行

kristapsdz /

openrsync

#12

BSD-licensed implementation of rsync

allinurl /

goaccess

#7

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

bol-van /

zapret2

#3

anti-dpi software

pgvector /

pgvector

#19

Open-source vector similarity search for Postgres

wolfSSL /

wolfCOSE

#11

A fast, portable, and lightweight COSE + CBOR implementation for embedded systems. Supports PQC, FIPS 140-3, DO-178, and MISRA C. Powered by wolfSSL.

brunodev85 /

winlator

#13

Android application for running Windows applications with Wine and Box86/Box64

86Box /

86Box

#2

Emulator of x86-based machines.

libsdl-org /

SDL

#18

Simple DirectMedia Layer

jqlang /

jq

#16

Command-line JSON processor

armel /

uv-k1-k5v3-firmware-custom

#10

This is a fork of F4HWN firmware https://github.com/armel/uv-k5-firmware-custom by @muzkr and @armel

merbanan /

rtl_433

#9

Program to decode radio transmissions from devices on the ISM bands (and other frequencies)

dayanch96 /

YTMusicUltimate

#17

The best tweak for YouTube Music iOS.

pret /

pokeemerald

#14

Decompilation of Pokémon Emerald

systemd /

systemd

#8

The systemd System and Service Manager

coop-deluxe /

sm64coopdx

#4

An official continuation of https://github.com/djoslin0/sm64ex-coop on sm64coopdx for the enhancements and progress it already has.

RsyncProject /

rsync

#2

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.

Genymobile /

scrcpy

#11

Display and control your Android device

duixcom /

Duix-Avatar

#1

🚀 Truly open-source AI avatar(digital human) toolkit for offline video generation and digital human cloning.

xiaojieonly /

Ehviewer_CN_SXJ

#9

ehviewer，用爱发电，快乐前行

raysan5 /

raylib

#7

A simple and easy-to-use library to enjoy videogames programming

ish-app /

ish

#3

Linux shell for iOS

libuv /

libuv

#13

Cross-platform asynchronous I/O

FreeRTOS /

FreeRTOS-Kernel

#5

FreeRTOS kernel files only, submoduled into https://github.com/FreeRTOS/FreeRTOS and various other repos.

hufrea /

byedpi

#10

Bypass DPI

jart /

cosmopolitan

#18

build-once run-anywhere c library

hathach /

tinyusb

#15

An open source cross-platform USB stack for embedded system

DaveGamble /

cJSON

#14

Ultralightweight JSON parser in ANSI C

coop-deluxe /

sm64coopdx

#12

An official continuation of https://github.com/djoslin0/sm64ex-coop on sm64coopdx for the enhancements and progress it already has.

AdAway /

AdAway

#6

AdAway is a free and open source ad blocker for Android.

OISF /

suricata

#19

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

Cyan4973 /

xxHash

#17

Extremely fast non-cryptographic hash algorithm

FWGS /

xash3d-fwgs

#8

Xash3D FWGS engine

RT-Thread /

rt-thread

#4

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

google /

security-research

#16

This project hosts security advisories and their accompanying proof-of-concepts related to research conducted at Google which impact non-Google owned code.

duixcom /

Duix-Avatar

#2

🚀 Truly open-source AI avatar(digital human) toolkit for offline video generation and digital human cloning.

redis /

redis

#6

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.

bol-van /

zapret2

#9

anti-dpi software

dorianborian /

sesame-robot

#8

An open and affordable mini quadruped robot based on ESP32.

timescale /

timescaledb

#12

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

floooh /

sokol

#10

minimal cross-platform standalone C headers

RsyncProject /

rsync

#3

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.

ValdikSS /

GoodbyeDPI

#16

GoodbyeDPI — Deep Packet Inspection circumvention utility (for Windows)

nicbarker /

clay

#15

High performance UI layout library in C.

FreeRTOS /

FreeRTOS-Kernel

#1

FreeRTOS kernel files only, submoduled into https://github.com/FreeRTOS/FreeRTOS and various other repos.

jart /

cosmopolitan

#13

build-once run-anywhere c library

jqlang /

jq

#14

Command-line JSON processor

openssl /

openssl

#11

General purpose TLS and crypto library

mackron /

miniaudio

#7

Audio playback and capture library written in C, in a single source file.

hathach /

tinyusb

#5

An open source cross-platform USB stack for embedded system

OpenTenBase /

OpenTenBase

#4

OpenTenBase is an enterprise-level distributed HTAP open source database.