Right now, ePen is in the planning stage even though I'll commit a
prototype this weekend. The first thing on the agenda is to decide how
to implement the tool. The prototype was done in Python and PyQt and
while it was a nice experience, the text editor leaves a lot to be
desired (read: it sucks). I've collected my thoughts in this document:
https://sourceforge.net/docman/display_doc.php?docid=115264&group_id=231664.
Feel free to post comments here so I can improve it.