I started this thread, aiming to be a canonical source for documenting differences between Perl GUI toolkits.
I have added a few toolkits, but a moderator, Undo, put it on hold as too broad, recommending I ask here for others' thoughts about it.
Is this question on-topic? I certainly believe it would be useful, as one could then reference all other Perl GUI toolkit questions there, but what do others think?