SharpMT is an offline Blog writer that is designed for MovableType based systems. It allows a writer to write a new Blog entry on an offline computer and later upload it to an MT server with one click. SharpMT can also syncronize the list of categories and a cache of previously published posts that are already on the server, offering automated cross-entries links. The 1.3 release adds support for date/time posting values, MP3/Now Playing plug-in integration, and an updated Add URL's dialog as well as some random bug fixes.
SharpMT is Donation-ware and requires the 1.1 version of the .NET Framework to run on a Windows-based PC.
News source: SharpMT Home Page