Redwood is a "Spotlight for the cloud" -- it searches Basecamp, Gmail, Google Docs, and Pivotal Tracker from one search bar on your desktop. You can download Redwood from our homepage: http://redwoodapp.com We've loved developing the app with MacRuby. Details on the technical guts: * MacRuby 0.10, embedded in the application bundle * Originally we used the Nokogiri and GData gems. However, we dropped these as the load time took several seconds during the application launch. A likely cause: gems are not compiled like the application code. The performance during application usage was fine. * Several Obj-C libraries: Sqlite3 and FMDB for database, ASIHTTPRequest for HTTP, Sparkle for auto-update, SBJson, and CocoaFob + Potion Store (a Rails app) for licensing. * Search results are rendered in HTML/CSS, and events are passed back and forth between an embedded Webview and Cocoa We'll provide a richer overview of our experience w/MacRuby in a couple of weeks on our blog. Give the full-featured trial a whirl and let me know how it goes: http://redwoodapp.com Cheers, Derek