Unity - The multiplatform game creation tools for everyone.
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Godot Engine - Feature-packed 2D and 3D open source game engine.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
foobar2000 - An advanced freeware audio player for the Windows platform.