Platforma - Wireframe library of layouts and UI elements
Source Wireframe Kit - Library of 537 blocks for desktop and mobile prototyping
Craftwork - A collection of User Interface resources made by Craftwork
Contra Wireframe Kit - Open source wireframe kit for design and prototyping 🚀
Streamline - Streamline is a web-based vacation rental software that manages vacation rental properties with flipkey integration, online booking, lead management, credit card processing, etc.
Figkit - Figkit is a wireframe library for Figma to communicate and design great user interfaces for desktop and mobile.