SparkleShare - Inspired by DropBox, built on git, FOSS (gitorious.org)

I like that the first questions I had is answered right in the FAQ:

  Q: Why is it written in Mono/C#?
  A: Because I hate freedom.

Dupe of: http://news.ycombinator.com/item?id=1424299 which links to SparkleShare's homepage instead of the readme file.