Uforio - Uforio is an alternative client for Reddit.
Circuito.io - Instant code and wiring for your project
narwhal - Narwhal is a simple iOS app for reddit.
library.io - Learn electronics and easily create circuit boards online
Subdood - Browse reddit in clear view of your boss and the creepy guy staring at you right now
B4R - Development tool for native Arduino programs.