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.
foobar2000 - An advanced freeware audio player for the Windows platform.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Winamp - Winamp is a media player that allows users to play multiple-file formats, arrange media in a varied file-management system, and play unique media with AAC encoding.