Visualify - Visualize your top artists on Spotify
Unity - The multiplatform game creation tools for everyone.
Spotify Web Visualizer - Beautiful full screen visuals for Spotify web player
Godot Engine - Feature-packed 2D and 3D open source game engine.
Synesthesia - Synesthesia is a Spotify music visualizer that comes with the advanced support to listen to thousands of music tracks with the visuals side by side.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.