C++

Corangeorangeduck/Corange

A pure C game engine and framework for cross-platform 2D/3D game development with modern graphics features.

libnfcnfc-tools/libnfc

A free, platform-independent library for accessing Near Field Communication (NFC) devices from userspace applications.

Raspberry Pi Embedderardera/flutter-pi

A lightweight Flutter Engine embedder for Raspberry Pi and Linux embedded systems that runs without X11 or Wayland.

otter-browserOtterBrowser/otter-browser

A lightweight web browser that recreates the classic Opera 12 UI and spirit using Qt5, focused on power users.

Blend2Dblend2d/blend2d

A high-performance 2D vector graphics engine powered by a JIT compiler for real-time rendering.

utf8.hsheredom/utf8.h

A single-header library providing UTF-8 string functions for C and C++, mirroring the standard string.h API.

Crow Translatecrow-translate/crow-translate

A lightweight desktop translator that translates and speaks text using multiple online translation APIs.

Traffic Serverapache/trafficserver

A fast, scalable, and extensible HTTP/1.1, HTTP/2, and HTTP/3 compliant caching proxy server for building cloud services.

TripleCrossh3xduck/TripleCross

A Linux eBPF rootkit demonstrating offensive capabilities with backdoor, C2, library injection, execution hijacking, persistence, and stealth modules.

hardened_mallocGrapheneOS/hardened_malloc

A security-focused memory allocator providing hardened malloc API with extensive heap corruption protections for modern 64-bit systems.

kissfftmborgerding/kissfft

A simple, portable Fast Fourier Transform (FFT) library for C with support for fixed and floating point data types.

PropertyChanged.FodyFody/PropertyChanged

A Fody add-in that automatically injects INotifyPropertyChanged event-raising code into property setters at compile time.

injapantor/inja

A header-only template engine for modern C++ with a Jinja2-like syntax, using nlohmann/json for data.

snmallocmicrosoft/snmalloc

A high-performance message-passing memory allocator designed for scalable multithreaded applications.

Jailhousesiemens/jailhouse

A Linux-based partitioning hypervisor that runs bare-metal applications or adapted operating systems alongside Linux in isolated cells.

cImguicimgui/cimgui

A thin, auto-generated C API wrapper for Dear ImGui, enabling its use from other programming languages via C bindings.

robot_localizationcra-ros-pkg/robot_localization

A ROS package providing nonlinear state estimation nodes for robot localization using sensor fusion.

minimp3lieff/minimp3

A minimalistic, single-header MP3 decoder library focused on small size, speed, and ISO conformance.

samtoolssamtools/samtools

A suite of command-line tools for manipulating SAM, BAM, and CRAM files in next-generation sequencing data analysis.

dotnet-formatdotnet/format

A command-line tool for automatically formatting .NET code to follow style guidelines and conventions.

ITextitext/itext-dotnet

A high-performance .NET library for creating, manipulating, inspecting, and maintaining PDF documents.

simdutfsimdutf/simdutf

A high-performance C++ library for Unicode validation and transcoding (UTF-8/16/32, Latin1, Base64) using SIMD instructions.

httpserver.hjeremycw/httpserver.h

A single-header C library for building event-driven, non-blocking HTTP servers with support for epoll and kqueue.

FamistudioBleuBleu/FamiStudio

A cross-platform music editor for creating authentic NES chiptunes, supporting multiple expansion chips and export formats.

SIPSorcerysipsorcery/sipsorcery

A comprehensive real-time communications library for .NET that enables VoIP and WebRTC capabilities in applications.

libdillsustrik/libdill

A C library implementing structured concurrency for writing concurrent programs with deterministic control flow.

ATFSonyWWS/ATF

A C#/.NET framework for building custom Windows-based authoring tools, used extensively in Sony game development.

path_plannerkarlkurzer/path_planner

A real-time Hybrid A* path planner for nonholonomic autonomous vehicles, generating smooth, efficient paths in unstructured environments.

vsts-agentMicrosoft/vsts-agent

A cross-platform build and release agent for Azure Pipelines and Team Foundation Server 2015+.

libde265strukturag/libde265

An open-source implementation of the H.265/HEVC video codec with a plain C API for easy integration.

Rogue Legacyflibitijibibo/RogueLegacy1

Source code for the original Rogue Legacy game, built with the FNA framework.

geometry3Sharpgradientspace/geometry3Sharp

A C# library for 2D/3D geometric computing, mesh algorithms, and spatial data structures, compatible with Unity.

Meshplasma-umass/Mesh

A drop-in malloc replacement that automatically reduces memory fragmentation in C/C++ applications without code changes.

NumKongashvardanian/NumKong

A portable mixed-precision math library with 2,000+ SIMD kernels for 15+ numeric types across x86, Arm, RISC-V, and WebAssembly.

OpenLocoOpenLoco/OpenLoco

An open-source re-implementation of Chris Sawyer's Locomotion, a transport company simulation game.

CRoaringRoaringBitmap/CRoaring

A high-performance C/C++ library for compressed bitmaps with SIMD optimizations, used in databases like ClickHouse and Apache Doris.