PencilCase - Transform your designs into native iOS apps in a heartbeat.
NumWorks - The graphing calculator that makes learning math easier.
Neonto - Visual tool for creating native iOS and Android UIs
Learney - Knowledge aggregator for developers
Rainbow Pencils - Make rainbows whenever you sharpen.
eMathHelp.net - Site is created to help people learn math. Includes algebra, calculus, differential equation calculators and notes with many examples.