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

Protocol Buffers - Google's data interchange format

JSON for Modern C++

LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.

GoogleTest - Google Testing and Mocking Framework

A library that provides an embeddable, persistent key-value store for fast storage.

An open-source C++ library developed and used at Facebook.

A modern replacement for Redis and Memcached

Fast C++ logging library.

A modern formatting library

A modern, C++-native, test framework for unit-tests, TDD and BDD - using C++14, C++17 and later (C++11 support is in v2.x branch, and C++03 on the Catch1.x branch)

UPX - the Ultimate Packer for eXecutables

Abseil Common Libraries (C++)

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

Nix, the purely functional package manager

🥑 ArangoDB is a native multi-model database with flexible data models for documents, graphs, and key-values. Build high performance applications using a convenient SQL-like query language or JavaSc…

cross-platform (Qt), open-source (GPLv3) video editor

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

AutoHotkey - macro-creation and automation-oriented scripting utility for Windows.

MSVC's implementation of the C++ Standard Library.

Apache Thrift

OpenGL Mathematics (GLM)

A microbenchmark support library

💻 C++ Functional Terminal User Interface. ❤️

ConEmu: Customizable Windows terminal with tabs, splits, quake-style, hotkeys and more

C++ websocket client/server library

C++ Requests: Curl for People, a spiritual port of Python Requests.

Chromium fork named after radioactive element No. 90. Source code and Linux releases. Windows/MacOS/ARM builds served in different repos, links are towards the top of the README.md.

The fastest feature-rich C++11/14/17/20/23 single-header testing framework

Guidelines Support Library