Contra Wireframe Kit - Open source wireframe kit for design and prototyping 🚀
Handsome Illustrations - Create unique illustrations for websites & applications.
Platforma - Wireframe library of layouts and UI elements
Control Illustrations - 108 free flat illustrations with customizable characters
Craftwork - A collection of User Interface resources made by Craftwork
Ouch! Illustrations by Icons8 - Professional, perfectly matching, and customizable illustrations for any designs