Source Wireframe Kit - Library of 537 blocks for desktop and mobile prototyping
Figma Map Maker - Figma plugin to generate map, supporting Google Maps, Mapbox
Form Wireframe Kit by InVision - A free wireframe kit from InVision
Easometric Figma Plugin - With Easometric it's really easy to create isometric layers.
Contra Wireframe Kit - Open source wireframe kit for design and prototyping 🚀
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.