Recto
A free desktop canvas where Claude Code, Codex and Cursor draw UI you can edit
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M3E Canvas
Sketch Material 3 Expressive screens and turn them into prompts for AI coding
It lets you show an AI coding tool what a screen should look like, instead of describing a layout in paragraphs and hoping.
M3E Canvas is a browser-based mockup tool built around Google's Material 3 Expressive components. Drag buttons, cards, navigation bars and dialogs onto a screen, link screens with tap and swipe transitions, preview the flow, then export the whole design as a natural-language prompt for Claude Code, Cursor or similar tools. It is a static Next.js app under MIT, with a live demo on GitHub Pages and a simple npm setup for running it yourself.
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