I'm in, with what I can. I wrote https://github.com/trentm/python-markdown2 It is basically a straight port of Gruber's Markdown.pl -- i.e. it is regex based. Plus, like most processors, it adds a number of extras/extensions. If this effort bears fruit, perhaps the most useful part of my implementation would be the test suite that I use: https://github.com/trentm/python-markdown2/tree/master/test/tm-cases Some of those tests are specific to markdown2 (e.g. those tagged with "extra" in the .tags files). If helpful I could easily separate out those tests that are for core Markdown functionality to a separate repo. The other "*-cases" dirs in https://github.com/trentm/python-markdown2/tree/master/test are copies of (likely old versions of) test suites from other Markdown projects. Good luck, Trent Mick (@trentmick, github.com/trentm)