Godot Engine – Multi-platform 2D and 3D game engine

Open Source Computer Vision Library

Tesseract Open Source OCR Engine (main repository)

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

Caffe: a fast open framework for deep learning.

The open-source database for the realtime web.

DeepSpeech is an open source embedded (offline, on-device) speech-to-text engine which can run in real time on devices ranging from a Raspberry Pi 4 to high power GPU servers.

Haptic input knob with software-defined endstops and virtual detents

Yoga is an embeddable layout engine targeting web standards.

Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.

very currency

A fast JSON parser/generator for C++ with both SAX/DOM style API

Ceph is a distributed object, block, and file storage platform

An open source re-implementation of RollerCoaster Tycoon 2 🎢

NoSQL data store using the seastar framework, compatible with Apache Cassandra

Perceptual JPEG encoder

Mobile Shell

Cap'n Proto serialization/RPC system - core tools and C++ library

A PSP emulator for Android, Windows, Mac and Linux, written in C++. Want to contribute? Join us on Discord at https://discord.gg/5NJB6dD or just send pull requests / issues. For discussion use the …

The official Open-Asset-Importer-Library Repository. Loads 40+ 3D-file-formats into one unified and clean data structure.

Minetest is an open source voxel game-creation platform with easy modding and game creation

F´ - A flight software and embedded systems framework

RE2 is a fast, safe, thread-friendly alternative to backtracking regular expression engines like those used in PCRE, Perl, and Python. It is a C++ library.

Transparent file encryption in git

Reliable & unreliable messages over UDP. Robust message fragmentation & reassembly. P2P networking / NAT traversal. Encryption.

MAME

OpenSCAD - The Programmers Solid 3D CAD Modeller

The WebAssembly Binary Toolkit

Synchronous multiroom audio player