Spout for Unity (Texture sharing for other programs) Resolume, Touchdesigner, VVVV
Get the spout plugin here: https://github.com/keijiro/KlakSpout
An introductory video to Spout for Unity, getting both senders (camera & texture target) and receivers setup and working correctly!
Spout is a great tool to pass textures between applications on the same machine, this is a video looking at setting everything up using the pre-compiled spout plugin made by Keijiro!