Stitch vs UI Copilot (Design Copilot)

Builds full-stack web applications from natural language, moving further into functional app development than standard UI design tools.

All-in-one AI assistant across web, browser, desktop and mobile

Produces high-quality frontend code directly from text prompts, but acts more as a developer tool than a pure designer.

AI sidebar and browser agent for reading, writing and research

Free / Open-sourceGive your coding agent real design judgment

SpecialistFrom idea or sketch to editable wireframes, hi-fi UI and code in minutes

Free / Open-sourceOpen-source frontend stack for building AI agents and copilots inside your own product

Converts sketches and text prompts into wireframes, but focuses more on rapid prototyping than production code generation.

SpecialistDesign-aware AI agent that turns Figma files, URLs, and prompts into live apps

Builds multi-screen interactive prototypes from PRDs and prompts, though with a stronger emphasis on exportable code.

Generates code-ready UI components quickly from prompts, but lacks advanced multi-screen user flow management.

SpecialistAn online whiteboard that mixes wireframing, diagramming, and AI agents