Git Sketch Plugin - Version control for designers
Sketch Styler - Sets the most similar style to unstyled layers automatically
Anima App - Design, get feedback, convert to code, publish, iterate.
Dood : The Puzzle Planet - A strategy puzzle game for the smart ones
Marvel for Sketch - Sync, play and record prototypes in Sketch!
Marvel Sketch Plugin - Rapid mobile and web prototyping with Sketch