GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
EnTT - Header-only C++ game development library with innovative ECS (Entity-Component-System).
SmartGit - SmartGit is a front-end for the distributed version control system Git and runs on Windows, Mac OS...
Entitas - Entity Component System Framework for C# and Unity
SourceTree - Mac and Windows client for Mercurial and Git.
EntityX - Fast, type-safe C++ ECS (Entity-Component System).