I personally worked on five.
iOS Game - Harvey Vs TheBadBits: http://itunes.apple.com/us/app/harvey-versus-thebadbits/id477710593?ls=1&mt=8%20%20
Sinatra App - eight - twitter magic 8 ball - eightapp.safetyscissors.co
Ruby Gem - Cloak: encrypted password storage - http://rubygems.org/gems/cloak
Rails app - Styylt: Style sharing app (Still working on it) - http://styy.lt
iOS Utility - StatusPad (Still working on it, well just waiting for iTunesConnect to come back) - News, Twitter, Schedule and Weather feed for the iPad.
What did you folks work on?
IOS Universal Framework - Xcode template that adds iOS static framework support: https://github.com/kstenerud/iOS-Universal-Framework
KSJSON - World's fastest JSON library for iOS: https://github.com/kstenerud/KSJSON
Objective Gems - Ongoing iOS programmer's toolbox: https://github.com/kstenerud/Objective-Gems
And a couple of stealth projects that I'm not ready to reveal yet.