Visily - The easiest and most powerful wireframe software for agile teams.
Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.
Learn SpriteKit by Design+Code - Make a platformer iPhone game from scratch in Swift 4.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
PSD to Sketch Design Converter - Convert a Photoshop design to a layered Sketch file for free
Scribus - Scribus is a desktop publishing (DTP) application.