C++

heatshrinkatomicobject/heatshrink

A data compression library for embedded and real-time systems with minimal memory usage.

ParadoxSiliconStudio/xenko

Xenko is a cross-platform game engine with a focus on VR/AR development, now known as Stride.

ngsngs-lang/ngs

A modern programming language designed specifically for DevOps tasks, offering structured data handling and cloud integration.

upbprotocolbuffers/upb

A small, fast C implementation of Protocol Buffers for embedded systems and high-performance applications.

ServiceStack.OrmLiteServiceStack/ServiceStack.OrmLite

A fast, simple, and typed ORM for .NET with a code-first approach and minimal configuration.

openblackopenblack/openblack

An open-source reimplementation of Black & White (2001) in modern C++ with support for OpenGL and Vulkan.

OpenDDSobjectcomputing/OpenDDS

Open-source C++ implementation of the OMG Data Distribution Service (DDS) for building real-time, distributed publish-subscribe systems.

FetlangProperty404/fetlang

A statically typed, procedural esoteric programming language where source code resembles fetish erotica.

Xamarin.Essentialsxamarin/Essentials

A cross-platform API library providing essential native device features for Xamarin mobile applications.

pgcopydbdimitri/pgcopydb

A tool to copy PostgreSQL databases between servers with parallel data streaming and concurrent index building, bypassing intermediate files.

PHPSpyadsr/phpspy

A low-overhead sampling profiler for PHP 7+ that works with CLI, Apache, and FPM without requiring code changes.

Microsoft Automatic Graph LayoutMicrosoft/automatic-graph-layout

A .NET library and toolset for automatic graph layout, visualization, and interactive viewing of graphs.

Polygon Mesh Processing Librarypmp-library/pmp-library

A modern C++ library for processing and visualizing polygon surface meshes with efficient data structures and standard algorithms.

yajl-rubybrianmario/yajl-ruby

A high-performance streaming JSON parsing and encoding library for Ruby with C bindings to YAJL.

libfmsrendle/libfm

A software implementation of factorization machines for estimating interactions between categorical variables in large datasets.

FiniteStateEntropyCyan4973/FiniteStateEntropy

A high-speed entropy coding library featuring Huff0 (modern Huffman) and FSE (ANS-based) codecs for fast compression and decompression.

Scientistgithub/Scientist.net

A .NET library for safely refactoring critical code paths by comparing old and new implementations in production.

ExcelDnaExcel-DNA/ExcelDna

A free library for creating Excel add-ins and user-defined functions using .NET languages like C# and VB.NET.

csoundcsound/csound

A sound and music computing system for audio synthesis, processing, and composition.

robin-mapTessil/robin-map

A C++ header-only library providing fast hash map and hash set implementations using robin hood hashing with open addressing.

rotors_simulatorethz-asl/rotors_simulator

A modular Gazebo simulator for multirotor aerial vehicles (MAVs) with ROS integration.

ShellProgressBarMpdreamz/shellprogressbar

A .NET library for displaying customizable progress bars and child progress bars in console applications.

Quake3eec-/Quake3e

A modern, optimized Quake III Arena engine with Vulkan and OpenGL renderers, focused on performance, security, and mod compatibility.

uSocketsuNetworking/uSockets

A minimal, cross-platform networking library providing optimized TCP, TLS, QUIC, and HTTP3 transports for async applications.

Computational Geometry Unity LibraryHabrador/Computational-geometry

A Unity library providing implementations of computational geometry algorithms for intersection detection, triangulation, mesh generation, and more.

libpg_querypganalyze/libpg_query

C library that provides PostgreSQL's SQL parser and scanner as a standalone component for external tools.

Minizipnmoinvaz/minizip

A modern, cross-platform C library for creating, reading, and modifying ZIP archives with extensive compression and encryption support.

EnvPoolsail-sg/envpool

A C++-based high-performance parallel environment execution engine for vectorized reinforcement learning simulations.

minizip-ngzlib-ng/minizip-ng

A modern, cross-platform C library for creating, reading, and modifying ZIP archives with extensive compression and encryption support.

Iaitōhteso/iaito

A Qt and C++ GUI for the radare2 reverse engineering framework, designed to make binary analysis accessible.

VoganSteveDunn/Vogen

A .NET source generator and analyzer that creates validated value objects from primitives to combat primitive obsession.

parsonkgabis/parson

A lightweight, C89-compatible JSON library with a simple API and dot-notation addressing.

Sepnietras/Sep

A modern, minimal, and high-performance .NET library for reading and writing CSV/TSV files with zero allocations and SIMD-accelerated parsing.

dyadrxi/dyad

A lightweight, portable, and easy-to-use asynchronous networking library for C.

PixelAnnotationToolabreheret/PixelAnnotationTool

A desktop application for semi-automatic image annotation using OpenCV's watershed algorithm with manual brush refinement.

junctionpreshing/junction

A C++ library providing multiple concurrent hash map implementations for high-performance multithreaded applications.