nexu-io/open-design

Runs locally and lets you generate web, mobile, and desktop prototypes using whichever model you already have configured — Claude Code, Gemini, Codex, Cursor. The pitch is 71 pre-built design systems and 19 skills baked in, so the output lands closer to something shippable than the usual AI-generated HTML soup. What makes it worth a look over the dozen other AI-to-UI tools: it is model-agnostic by design, exports to HTML, PDF, PPTX, and MP4, and includes a sandboxed preview so you are not copy-pasting blind. Reservation: the scope is ambitious enough that early bugs are guaranteed, and local-first means you own the setup pain. But for a solo founder who wants to prototype fast without paying a Figma subscription or a design agency, the value proposition is unusually concrete. -> Best for: solo founder or indie hacker who needs fast, exportable UI prototypes without a design tool subscription