Sketchdown – Wireframes as code, like Mermaid but for UI mockups
Mermaid for wireframes, but relies on AI to close the last mile.

URL-to-mockup in real time, but Figma/Framer already own the space.
Design agencies, freelance developers, product teams needing rapid prototypes
Figma · Framer · Relume
Mermaid for wireframes, but relies on AI to close the last mile.
Sitemap-first design workflow, but Figma, Miro, and Whimsical already own this space entirely.
Official Balsamiq MCP server turns wireframes into LLM context for code generation.
Deep Randomize swaps graph topologies from 20 layouts for infinite procedural wireframe variations.
ASCII rendering cuts tokens dramatically, but browser automation and LLM observation are well-trodden ground.
Angora converts conversation and design tokens into actual production HTML/CSS (via Astro) rather than a static Figma specimen — it builds semantic, accessibility-minded components and wires them to data without a client runtime. The idea of the design system being the shipped site is smart and feels fresh; the obvious caveat is complexity — interactive state, complex component logic, and long-term maintainability are the hard parts that an alpha needs to prove it can handle.