Sketch Mirror - Preview your iOS designs directly on your devices
UI Movement - The best UI design inspiration, daily
Flowkit - Sketch library for user flows/content maps/annotations
Design Hunt - Curated design inspiration for everyone
Figma Mirror - Figma Mirror is an application that covers top trending designing or sketching ideas making your teamwork in a single environment and design better products from start to finish.
UI Jar - Hand-picked design inspiration for your real life projects