Frame0

Sketching a wireframe by hand-drawn look, then clicking it into a working prototype, is the job Frame0 does.

This wireframing tool runs on Windows, macOS and Linux, and its sketchy style tells stakeholders they are looking at a draft, not a finished design.

That keeps feedback on structure rather than colors and polish.

Frame0 has UI components for desktop, mobile, smartwatch and web, plus over 1,500 sketch-style icons.

You can link shapes to build user flows and present the project as a slideshow.

AI services connect to the app, so you can generate wireframes from a prompt and produce code from wireframes you have made.

Smaller touches include dark mode, locking shapes, freehand sketching, image export and mirrored frames for consistency.

Some features sit in the premium tier: device templates, exporting live prototypes to HTML and PDF, extra libraries, and diagram tools for flowcharts, UML and Entity-Relationship diagrams.

The pricing model is listed as free, so check which of those extras you actually need before relying on them.