What are some alternatives?
When comparing Figma Sort It and Whimsical Wireframes, you can also consider the following products
Figma Super Tidy - Figma plugin to easily align, rename and reorder your frames
Method Wireframe Kit - Find your method of being incredibly fast in prototyping.
Figma Map Maker - Figma plugin to generate map, supporting Google Maps, Mapbox
Mydraft.cc - 100% free wireframing
Viewports - Figma plugin to set screen sizes with market share in mind
UX Flow Wireframe Prototyping System - Create beautiful user flows prototypes for your next project