1. TtremoteexamplesDemonstrates how to use Three20's TTModel system with TTTableViewController, TTThumbsViewController and TTPhotoViewController
2. TtstylebuilderAn interactive tool for constructing Three20's TTStyle rendering pipelines
3. KalA calendar component for the iPhone (the UI is designed to match MobileCal)
4. Intellij ElmElm language support for IntelliJ, WebStorm, PhpStorm and PyCharm (JetBrains)