Pixlr - Pixlr® makes it easy to transform everyday images into stunning works of art.
Visily - The easiest and most powerful wireframe software for agile teams.
Retrica - Discover yourself with Retrica
PSD to Sketch Design Converter - Convert a Photoshop design to a layered Sketch file for free
360 Camera - Capture 360 photos and videos with your Android device, 360 Camera is one of the most leading camera apps that allows you to enjoy all in one photography experience.
Learn SpriteKit by Design+Code - Make a platformer iPhone game from scratch in Swift 4.