Anima App - Design, get feedback, convert to code, publish, iterate.
Symbols for Sketch - A set of templates to make an icon font with Sketch (gulp)
Sketch Repo - Collection of resources for anyone who uses Sketch
Git Sketch Plugin - Version control for designers
Sketch Confetti - Generate gorgeous confetti patterns in 1 click.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.