Antigravity Link vs onUI
A side-by-side comparison of two IDE Extensions AI agents - to help you pick the right one.
Antigravity Link
Antigravity Link is a VS Code extension that connects mobile devices to Google's Antigravity IDE, enabling mirrored AI chat sessions, message sending, file uploads, and workflow automation. It supports integration via a local HTTP API or 9 MCP tools, and is listed in the official MCP Registry.
onUI
onUI is an open-source browser extension and MCP server that enables annotation-first UI pair programming with AI agents. It allows users to annotate webpages and bridge UI context to AI coding tools like Claude Code, Cursor, Windsurf, or Copilot, facilitating collaborative development.
Feature comparison
| Antigravity Link | onUI | |
|---|---|---|
| Category | IDE Extensions | IDE Extensions |
| Open source | ||
| Self-hostable | ||
| Skill level | Intermediate | Intermediate |
| Pricing | Open Source | Open Source |
Antigravity Link: what it solves
It eliminates the need to switch between devices during AI-assisted coding by allowing seamless interaction with Antigravity IDE sessions from a mobile device.
onUI: what it solves
It streamlines the process of integrating UI context into AI-assisted coding workflows, eliminating manual context switching between browsers and IDEs.