I have never heard of it. It also does a poor job of marketing as I have no idea what it even is from the documentation (https://ipe.otfried.org/manual/onepage.

I have never heard of it. It also does a poor job of marketing as I have no idea what it even is from the documentation (https://ipe.otfried.org/manual/onepage.html https://ipe.otfried.org/manual/onepage.html) Whenever I needed diagrams for my latex documents, I usually just use tikz