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A lightweight, vanilla JS, open source BYOK (Bring Your Own Key) clone of the Google Antigravity UI. It currently features a live xterm.js terminal with direct local file system sync and a sidebar agent capable of running commands and editing files. Built in pure HTML/CSS/JS for maximum speed and zero installation.

216 starsCSS

OpenGravity – A zero-install, BYOK vanilla JS clone of Antigravity

by ab613·May 11, 2026·106 points·30 comments
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AI Analysis

●MidShip ItNiche Gem

Antigravity UI clone limited to Gemini keys and basic agent logic.

Strengths
  • •WebContainer API enables real Linux-like terminal execution directly in the browser.
  • •Zero-install architecture means no npm dependencies for the IDE itself.
  • •Local storage key management ensures no server-side API key exposure.
Weaknesses
  • •Gemini-only support limits utility compared to multi-model competitors.
  • •Agent orchestration is described as basic and needs significant community work.
Target Audience

Frontend developers wanting a lightweight, zero-install coding environment

Similar To

Google Antigravity · StackBlitz · CodeSandbox

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