Landing UI Kit - Handcrafted UI components for landing pages
iOS Design Kit - The newest library of native iOS templates
Now UI Kit - A beautiful Bootstrap 4 UI kit. Yours free.
Velvet UI Kit - Cozy iOS UI Kit designed for Sketch 🌸
Bots UI Kit - Fully customizable Sketch UI Kit for Messenger Platform
Ionic Sketch UI Kit - Smart Sketch library for Ionic 3