Symbol Design System - Advanced web-design system based on Sketch nested symbols.
Base UI Sketch Framework - Huge set of everything you need to design and prototype
Supernova Studio - The world’s first true design-to-code platform 🚀
INSTAD.IO - Automagically converts vector images into sketchy style
Confetti for Adobe XD - Generate gorgeous confetti patterns in 1 click
Sketch Extensions - An official collection of Sketch extensions & plugins