SmartCards+ - Spaced Repetition Software for iOS. Modern, powerful and easy to use.
Request for Startup - Share and discover great startup ideas people actually want
FlipToMind - Space repetition app to help you remember everything
GoSquared People Analytics - One place to understand your users
Zorbi - Spaced-Repetition Flashcards - Other tools are built by boomers, Zorbi is built by students.
Content Idea Generator - Free tool creates ideas for your content marketing strategy