CONV. - Convert YouTube video to MP3, GIF or MP4
Elasticode - Build, deploy & personalize native mobile experience
Downie - Video download for OS X. Downie supports at this moment over 1,000 different sites.
Snackwyze - Clickable walkthroughs from screen recordings in seconds
Yout - YouTube to Mp3 Converter
Cohere - A powerful way to visually demonstrate ideas and connect ideas together