Ipe is a lovely piece of software. I use it a lot and always feel that it deserves to be more well-known. I do not find it especially good for commutative diag

Ipe is a lovely piece of software. I use it a lot and always feel that it deserves to be more well-known. I do not find it especially good for commutative diagrams, though. I usually type tikz-cd code for those cases.