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An open-source browser extension and MCP server for annotation-first UI pair programming with AI agents, supporting Claude Code, Cursor, Windsurf, Copilot, compatible with Chrome, Edge, Firefox, free, licensed under GPL-3.0.
| Plan | Price | Best For |
|---|---|---|
| Free | $0 | Trying out the tool |
| Pro | $9-29/mo | Solo entrepreneurs |
| Business | $49-99/mo | Small teams (5-20) |
Prices are estimates. Visit website for current pricing.
Video review coming soon
| Tool | Rating | Pricing | Best For |
|---|---|---|---|
| onUI ★ | 0/5 | Free | Code |
onUI offers a free plan. The free tier has limited features, while paid plans unlock full functionality.
An open-source browser extension and MCP server for annotation-first UI pair programming with AI agents, supporting Claude Code, Cursor, Windsurf, Copilot, compatible with Chrome, Edge, Firefox, free, licensed under GPL-3.0.
Yes! Check out our comparison page for alternatives to onUI.View alternatives →
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