CamTwist is totally free and comes with no warranty or support. That being said, I welcome hearing about suggestions and problems you might have. I work on new features and bug fixes in my spare time and unfortunately some things don’t get addressed. If CamTwist is useful to you, I’d enjoy hearing about it as well. Lastly, donations are appreciated. Please feel free to donate whatever you feel is appropriate for CamTwist as it is. CamTwist is free because I enjoy working on it and because I don’t have the resources to properly support it. If you decide to make a donation, I thank you, but please do it knowing that I’ll still not be able to support you beyond what I already do.