Unity - The multiplatform game creation tools for everyone.
Phunt - Product Hunt command line interface
Godot Engine - Feature-packed 2D and 3D open source game engine.
Haxor News - A Hacker News command line interface
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.