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

Bitcoin Core integration/staging tree

GPT4All: Run Local LLMs on Any Device. Open-source and available for commercial use.

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

Vulkan-based implementation of D3D8, 9, 10 and 11 for Linux / Wine

A Smart Ethernet Switch for Earth

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

A pleasant note-taking platform in native C++.

Monero: the secure, private, untraceable cryptocurrency

Written in C++ and using SDL, The Powder Toy is a desktop version of the classic 'falling sand' physics sandbox, it simulates air pressure and velocity as well as heat.

Telegram Bot API server

Voxel module for Godot Engine

Decentralized pool for Monero mining

Go wrapper library for "Dear ImGui" (https://github.com/ocornut/imgui)

A general-purpose, extensible and customizable C++ extension for Godot Engine.

Godot Steam integration using GDNative.