They differ.
A review of differences could be interesting.
IMO Mark S.' Noto is the most flexible of them all, even in early development.But let's discuss it more.TT
Mohammad,Thanks for keeping everyone informed.I do see people often reinventing the wheel, however they usually come out quite different each time.
Each concept has value in its own right.

TiddlyTweeter wrote:A review of differences could be interesting.
That would be very informative for users
TBH, lots of great work gets lost here because of lack of a framework bringing it together into one family.