https://techcrunch.com/2021/01/26/google-open-sources-tilt-brush-vr-software-as-it-shuts-down-the-tools-internal-development/

As Facebook and Apple begin to fire up more projects in the AR/VR world, Google has spent the last year shutting down most of their existing projects in that space.

Today, the folks at Google announced they had ended active development of Tilt Brush, a VR painting app that was one of virtual reality’s early hit pieces of software. The app allowed users to use virtual reality controllers as brushes to construct digital sculptures and environments.