MoinMoin2 exists and works on Python 3, but sadly there's still no stable release and it requires slightly older Python packages right now. We've also had stran

MoinMoin2 exists and works on Python 3, but sadly there's still no stable release and it requires slightly older Python packages right now. We've also had strange problems with index (Whoosh library) performance on a large wiki that we had to hack around, but it might be a good migration path for you. And if you don't want to use moin2, it can convert the custom markup to Markdown, which you can then use elsewhere.