I just released VPT 8, over ten years after the first release of Video Projection Tools (VPT). VPT has proven to be a popular free alternative for windows and mac users interested in projection mapping and realtime video experiments: The previous version VPT 7 was downloaded over 100000 times, 2/3 was windows users, 1/3 mac users.
VPT 8 has a lot of under the hood changes. It is now 64-bit only. It will also be the last version of VPT.
I have created an online manual which should make it easier to get started doing interesting things with your computer and a projector.
You can download and read more about new features on the VPT home page.