Visily - The easiest and most powerful wireframe software for agile teams.
CONV. - Convert YouTube video to MP3, GIF or MP4
Learn SpriteKit by Design+Code - Make a platformer iPhone game from scratch in Swift 4.
Downie - Video download for OS X. Downie supports at this moment over 1,000 different sites.
PSD to Sketch Design Converter - Convert a Photoshop design to a layered Sketch file for free
Yout - YouTube to Mp3 Converter