Brusher - Tiny library to add interactive backgrounds to webpages
Crystal: Sketch Mirror for Android - Crystal: Sketch Mirror for Android is an application that is designed for viewing your sketch designs in real-time, navigate prototypes and download content related to the sketches for offline viewing.
Webflow Interactions - Design and build web animations and interactions
Flowkit - Sketch library for user flows/content maps/annotations
Spott - API to work with cities, countries and political divisions.
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.