Git Sketch Plugin - Version control for designers
Marvel for Sketch - Sync, play and record prototypes in Sketch!
Anima App - Design, get feedback, convert to code, publish, iterate.
Marvel Sketch Plugin - Rapid mobile and web prototyping with Sketch
Puzzle Tokens for Sketch - Bring the power of styles preprocessing to Sketch
Sketch Plugin Course by Design+Code - Enhance your design workflow by creating a Sketch plugin