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Prototyper

Prototyper

Prototyper is a shared workspace where visual designs and running React apps stay in sync for people and agents.

Operating headquarters
San Francisco, CA, US🇺🇸
Founded
2024
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Library

Prototyper - Library

prototyper.co·Crawled Oct 9, 2026·

Topics

Publication type

Content origin
Row density

Product

6 pages
  1. AI agents that build UI on a shared canvas/agents

    Built-in AI agents plus any agent you connect over MCP, like Claude Code or Codex, share one workspace. They read your files, build running apps and open PRs.

  2. Design system and tokens your AI agents follow/design-system

    Your design tokens and 50+ accessible components, readable by AI agents, so every screen they generate uses the same color, type and spacing as your own work.

  3. Infinite canvas for AI prototyping with agents/canvas

    Sketch a screen, branch it into variants and ship real React on an infinite canvas where your team and coding agents like Claude Code and Codex work together.

  4. Live app preview while your AI agent codes/live-preview

    Watch the app run while the agent writes it. Sub-second in-browser recompiles, errors fed back to the agent so it fixes its own work, and mobile in one click.

Blog

6 pages
  1. Blog/blog

    Product stories, design lessons, and what we’re learning as people and agents ship together.

  2. Changelog/changelog

    The latest Prototyper features, refinements, and fixes — newest first.

  3. Connect GitHub and Google Drive/changelog/2026-06-30-github-and-google-drive-connections

    Mount your repositories and Drive folders into a workspace, so you and your agents work with them as files.

  4. Design mode/changelog/2026-07-02-design-mode

    A visual theme editor in your workspace sidebar — tune color, shape, and type, and watch your app restyle itself live.

Pricing

1 page
  1. Free, Premium, and Team plans/pricing

    Start free, then choose a Prototyper plan for individuals or teams. Compare AI usage, collaboration, version history, support, and annual savings.

Comparison

6 pages
  1. Compare/vs

    How Prototyper compares to the tools you might use instead. Honest by policy: we credit what each tool does well, then show the real differences.

  2. Figma alternative for teams that ship/vs/figma

    A Figma alternative where designs already run: real React apps on an infinite canvas, built with your AI agents and ready to test or ship.

  3. Free Balsamiq alternative, AI-native wireframes/vs/balsamiq

    A free, AI-native Balsamiq alternative: sketch a low-fi wireframe, then your coding agent builds it as a running React screen on the same multiplayer canvas.

  4. Sketch alternative for Windows and the browser/vs/sketch

    An AI-native Sketch alternative for Windows, Linux and any browser: your coding agent builds real React screens on a multiplayer canvas the whole team can edit.

About

1 page
  1. Why we built Prototyper, the multiplayer agent workspace/story

    The Prototyper founding memo: why companies will run agents as teammates, and why we built one canvas where people and coding agents share files and prototypes.

Contact

1 page
  1. Contact/contact

    Get in touch with the Prototyper team. We're here to help with questions, feedback, or partnership inquiries.

Homepage

1 page
  1. Homepage/

    Prototyper is an AI prototyping tool for anything visual: your agents build running apps, wireframes and slide decks with your team, from real design rules.

Privacy

2 pages
  1. Cookie Policy/cookie-policy

    Cookie Policy for Prototyper

  2. Privacy Policy/policy

    Privacy Policy for Prototyper

Terms & Conditions

1 page
  1. Terms and Conditions/terms

    Terms and Conditions for Prototyper

Coverage

2 items
  1. prototyperAIgithub.com/prototyperAI

    GitHubRepository owner

  2. Apertu Capital is the First Institutional Investor in Protochase (Prototyper)apertucapital.com/apertu-capital-is-the-first-institutional-investor-in-protochase/

    Apertu Capital becomes the first institutional investor in Protochase, also identified as Prototyper. Prototyper raises $450,000 for a full-stack AI design assistant. The company says fragmented design handoffs slow product velocity, with engineers waiting for specifications and designers rebuilding components. Its work focuses on human-computer interaction.

    Dec 2024 · Apertu CapitalNews article