dateDropper Javascript - The lightest and the most complete javascript date picker
SmartCards+ - Spaced Repetition Software for iOS. Modern, powerful and easy to use.
JavaScript.com - A free resource for learning and developing in JavaScript
FlipToMind - Space repetition app to help you remember everything
CodeCombat - Learn programming with a multiplayer live coding strategy game.
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.