Fluid for Sketch - Sketch plugin to make your responsive designs more efficient
Visily - The easiest and most powerful wireframe software for agile teams.
Anima App - Design, get feedback, convert to code, publish, iterate.
Learn SpriteKit by Design+Code - Make a platformer iPhone game from scratch in Swift 4.
Git Sketch Plugin - Version control for designers
Bootsketch - Ship products instead of renaming layer groups