FreshBooks happened to re-release their API today. It’s a pretty significant overhaul, and I’ve re-written my Ruby wrapper to reflect the changes. The code is still in it’s early stages, but if you want to check it out, you can pull it from my Subversion server:
svn co svn://benlog.org/pub/freshbooks
It’s also got a new name: FreshBooks.rb. The old name (FreshBooks API for Ruby) was a little long winded.
Update: Fixed up a few bugs pointed out by Flinn. Thanks for the heads up.