Prezi - Welcome to Prezi, the presentation software that uses motion, zoom, and spatial relationships to bring your ideas to life and make you a great presenter.
Solaris Sky Calendar - An astronomy calendar right in your pocket
Reveal.js - A framework for easily creating beautiful presentations using HTML
Lumy - Helps you track photographic times
Sozi - Sozi
Sundial App - Sun & Moon times and alerts for iPhone, iPad, & Apple Watch