Git Sketch Plugin - Version control for designers
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Anima App - Design, get feedback, convert to code, publish, iterate.
Touch GIS - The premier tool for mobile field data collection and visualization. Available for iPhone & iPad.
Marvel for Sketch - Sync, play and record prototypes in Sketch!
Cone - A delightful and easy to use color picker for the real world