C++

bloatygoogle/bloaty

Bloaty is a size profiler for binaries that analyzes what's taking up space inside executable files.

Xamarin.Formsxamarin/Xamarin.Forms

A cross-platform UI toolkit for building native iOS, Android, Windows, and macOS apps with C# and .NET.

AngleSharpAngleSharp/AngleSharp

A .NET library for parsing HTML5, SVG, MathML, and CSS with a standards-compliant DOM.

ServiceStack.OrmLiteServiceStack/ServiceStack

A simple, fast, versatile, and highly-productive full-featured web services framework for .NET with a message-based design.

ServiceStackServiceStack/ServiceStack

A simple, fast, versatile, and highly-productive full-featured web services framework for .NET with a message-based design.

zcashzcash/zcash

A privacy-focused cryptocurrency that uses zero-knowledge proofs to enable shielded transactions with full anonymity.

tch-rsLaurentMazare/tch-rs

Rust bindings for the C++ API of PyTorch, providing thin wrappers around libtorch.

Hyperscanintel/hyperscan

A high-performance multiple regex matching library using hybrid automata for simultaneous pattern matching across data streams.

VMAFNetflix/vmaf

An Emmy-winning perceptual video quality assessment algorithm that fuses multiple metrics to predict human visual quality.

flashlightfacebookresearch/flashlight

A fast, flexible C++ standalone library for machine learning with high-performance defaults and total internal modifiability.

flashlightflashlight/flashlight

A fast, flexible C++ standalone library for machine learning with high-performance defaults and total internal modifiability.

algorithmsxtaci/algorithms

A collection of classic algorithms and data structures implemented as single-header C++ files with demo programs.

Edge.jstjanczuk/edge

Edge.js enables in-process interoperability between Node.js and .NET, allowing you to call .NET from Node.js and vice versa.

QPDFqpdf/qpdf

A command-line tool and C++ library for content-preserving PDF transformations like linearization, encryption, splitting, and merging.

Argon2P-H-C/phc-winner-argon2

Reference C implementation of Argon2, the memory-hard password hashing function that won the Password Hashing Competition.

UnityThrowTheSwitch/Unity

A lightweight unit testing framework for C, specifically designed for embedded systems and microcontroller development.

TCMallocgoogle/tcmalloc

Google's fast, multi-threaded malloc implementation for C and C++ memory allocation.

libwebsocketswarmcat/libwebsockets

A lightweight, secure, pure C library for building scalable client and server applications with HTTP/1, HTTP/2, WebSockets, and MQTT.

The Powder Toysimtr/The-Powder-Toy

A desktop physics sandbox game simulating air pressure, velocity, heat, and countless interactions between substances.

mdpvisit1985/mdp

A terminal-based presentation tool that renders markdown files as slideshows with keyboard navigation.

LXClxc/lxc

A mature low-level Linux container runtime focused on system containers with strong security features and kernel integration.

cmatrixTreri/cmatrix

A terminal-based screensaver that simulates the iconic falling green code effect from The Matrix movie.

cmatrixabishekvashok/cmatrix

A terminal-based screensaver that simulates the iconic falling green code effect from The Matrix movie.

Panda3Dpanda3d/panda3d

A powerful, mature open-source cross-platform game engine for Python and C++ programs, originally developed by Disney and CMU.

rippledripple/rippled

A C++ server daemon implementing the XRP Ledger protocol, powering the decentralized XRP cryptocurrency blockchain.

AltSnapRamonUnch/AltSnap

A maintained fork of AltDrag that lets you move and resize Windows windows by holding Alt and clicking anywhere on them.

MapsterMapsterMapper/Mapster

A high-performance, developer-friendly object-to-object mapper for .NET that automates mapping code generation.

Confluent Kafka Golang Clientconfluentinc/confluent-kafka-go

Confluent's high-performance Golang client for Apache Kafka, built on librdkafka with commercial support.

QRCoder Wcodebude/QRCoder

A pure C# library for generating QR codes and Micro QR codes with multiple output formats and 23+ payload generators.

hotspotKDAB/hotspot

A standalone GUI for visualizing and analyzing Linux perf data, featuring flame graphs, timeline filtering, and off-CPU profiling.

CommonMarkcommonmark/commonmark-spec

A formal specification for Markdown syntax with reference implementations in C and JavaScript.

sol2ThePhD/sol2

A high-performance, header-only C++ library for binding to Lua with advanced features and zero-overhead abstractions.

tboxtboox/tbox

A glib-like cross-platform C library providing modules for streams, coroutines, containers, algorithms, and more to simplify C development.

sslhyrutschle/sslh

A protocol multiplexer that shares SSH, HTTPS, and other services on a single port by inspecting the first data packet.

opentrackopentrack/opentrack

Open-source head tracking software that translates real-world head movements into game inputs for flight simulators and military games.

Phusion Passengerphusion/passenger

A fast, robust web and application server for Ruby, Python, and Node.js that simplifies deployment and adds enterprise features.