Movable type has just been open sourced.
Six Apart have some smart cookies.
MTOS is one of the only open source blogging tools with built-in support for an unlimited number of blogs, an unlimited number of authors, and sign-in with OpenID, with no plugins needed.
Ben and Mena were really committed to setting the standard that Movable Type would always be open
Excellent. I'll now have to move my blog to a MT SaaS provider (free or not). At least that way, I can always know that if I need to move my data - I can. Oh, as for standard? I think there is a good chance that MT will fast become that blogging platform standard and portability for blogs will be based around it.
Thanks to David for pointing this one out.