C++

RGBDSgbdev/rgbds

A free assembler/linker toolchain for developing games and software for the Nintendo Game Boy and Game Boy Color.

memoryfoonathan/memory

STL-compatible C++ memory allocator library with a simpler RawAllocator concept and various allocator implementations.

GatekeeperAltraMayor/gatekeeper

An open-source, scalable DDoS protection system designed for network operators to withstand high-bandwidth attacks.

loam_livoxhku-mars/loam_livox

A robust, real-time LiDAR odometry and mapping package optimized for Livox LiDARs with small fields of view.

HighwayHashgoogle/highwayhash

Fast, strong hash functions including SipHash and HighwayHash, offering high-speed SIMD implementations with security claims.

TimewarriorGothenburgBitFactory/timewarrior

A command-line time tracking utility with stopwatch features, calendar-based backfill, and flexible reporting.

open-appsecopenappsec/openappsec

A machine learning security engine that preemptively prevents web app and API threats using supervised and unsupervised models.

OpenSAGEOpenSAGE/OpenSAGE

A free, open-source re-implementation of the SAGE 3D real-time strategy engine used in Command & Conquer: Generals.

toy enginehugoam/toy

A thin, modular C++ game engine designed for building games directly from C++ with full control and fast iteration.

govipsdavidbyttow/govips

A Go wrapper for libvips providing lightning-fast image processing and resizing with type-safe bindings.

SOCISOCI/soci

A C++ database access library providing a simple, unified interface for multiple database backends.

Greenworksgreenheartgames/greenworks

A Node.js addon that enables Steamworks integration for HTML5 games and apps built with NW.js or Electron.

microprofilejonasmr/microprofile

An embeddable, lightweight profiler for C++ applications with CPU/GPU timing, live web view, and dynamic instrumentation.

Horde3Dhorde3d/Horde3D

A lightweight, cross-platform 3D rendering and animation engine with a clean C++ architecture and C-style API.

Lumosjmorton06/Lumos

A cross-platform C++ game engine for 2D and 3D development with Vulkan rendering and Lua scripting.

libpngpnggroup/libpng

The official reference library for reading and writing PNG (Portable Network Graphics) image files.

hashcat-utilshashcat/hashcat-utils

A collection of small, chainable command-line utilities for advanced password cracking operations.

EmbedIOunosquare/embedio

A tiny, cross-platform, module-based web server for .NET, enabling lightweight web applications and REST APIs.

Security-Enhanced LinuxSELinuxProject/selinux

Upstream repository for the Security Enhanced Linux (SELinux) userland libraries and tools, complementing the kernel's mandatory access control features.

LaserGRBLarkypita/LaserGRBL

A Windows GUI for GRBL specifically optimized for laser cutter and engraver control.

PiFmRdsChristopheJacquet/PiFmRds

FM-RDS transmitter using the Raspberry Pi's PWM to generate FM modulation with real-time RDS data.

MoonSharpxanathar/moonsharp

A complete Lua interpreter written in C# for .NET, Mono, Xamarin, and Unity3D platforms with remote debugger support.

Torque 2DTorqueGameEngines/Torque2D

A free, open-source, cross-platform 2D game engine built on proven Torque technology with editors and modular tools.

Sming FrameworkSmingHub/Sming

An asynchronous embedded C++ framework for ESP8266, ESP32, and Raspberry Pi Pico with powerful networking features.

p0wnedShellCn33liz/p0wnedShell

A PowerShell runspace post-exploitation toolkit written in C# that bypasses security mitigations and includes offensive modules.

Dripninjudd/drip

A fast JVM launcher that reduces startup times by keeping pre-initialized JVMs in reserve, then discarding them after use.

You Don't Know Node.jsazat-co/you-dont-know-node

An online course and presentation covering core Node.js concepts like event emitters, streams, buffers, clusters, and C++ addons.

Chloeshuxinqin/Chloe

A lightweight, high-performance .NET ORM library with LINQ-style querying for multiple databases.

TLSFmattconte/tlsf

A high-performance, deterministic memory allocator with O(1) operations and low fragmentation for embedded and real-time systems.

Handmade MathHandmadeMath/Handmade-Math

A single-file public domain math library for game and graphics programming with C/C++ support.

Light Mapperands/lightmapper

A C/C++ single-file library for drop-in lightmap baking using your existing OpenGL renderer.

ThorVGthorvg/thorvg

A production-ready C++ vector graphics engine for SVG and Lottie rendering, optimized for performance and lightweight integration.

ParadoxSiliconStudio/xenko

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

VcVcDevel/Vc

A portable C++ library providing SIMD vector types for explicit data-parallel programming with zero-overhead abstractions.

heatshrinkatomicobject/heatshrink

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

ModdableModdable-OpenSource/moddable

An SDK for building IoT applications on microcontrollers using modern JavaScript with networking, graphics, and hardware APIs.