Taking a quick look, I don't want to besmirch anyone else's efforts, and both of these projects look great. libtickit appears to be missing any kind of multimedia/pixel-based approach along the lines of Notcurses's ncvisual -- I'm not sure about CPPurses, but that one being written in C++ would seem to exclude pure C programs (obviously not if it's using POD structures etc).

Both look like good efforts, and there's plenty of room for more than one project in this space. I wish them both luck!