Review of Windows Live Writer powered by the Slant community.
Currently compatible with Windows Live Spaces, SharePoint blogs, Blogger, LiveJournal, TypePad, WordPress, Telligent Community, PBlogs.gr, JournalHome, the MetaWeblog API, the Movable Type API, Blogengine, Squarespace, and all blogs that support Really Simple Discovery.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Great plugin community
A list of available plugins can be found here.