Ecto – supports TypePad, MovableType, MetaWeblog, Blogger and Atom. "ecto fully supports Blogger’s implementation of the Atom interface, and basic support for TypePad’s implementation. File upload is not supported yet for TypePad."
Qumana – Qumana works with all major blog hosts, including Blogger, TypePad, Movable Type, Blogware and WordPress. The following are the currently implemented APIs: metaWeblog , Blogger, MoveableType
Zempt – "So only tools that support MT’s API will work with Zempt. This includes not only Movable Type and TypePad, but WordPress and others as well."