Show HN: OpenGravity – A zero-install, BYOK vanilla JS clone of Antigravity
A high school student just open-sourced a Vanilla JS clone of Google's Antigravity IDE—zero dependencies, real Linux terminal, BYOK. Live demo running.
Why it matters
Open-source AI IDE tooling is lowering the barrier for developers to build custom agent workflows without hitting closed-source usage limits. Early-stage but demonstrates WebContainer + LLM agent integration as a viable lightweight alternative to proprietary tools.
The key facts
17 to knowBuilt with Vanilla JS, no build steps or framework dependencies
Uses WebContainer API for real in-browser Linux environment
BYOK (Bring Your Own Key) — API keys stored in localStorage only
Inspired by Google Antigravity due to usage limit friction
Open-sourced early (alpha stage) to gather community feedback
Live demo available at opengravity.pages.dev
Integrates xterm.js for terminal emulation
Supports file editing, shell commands, dependency installation in-browser
Creator is high school student balancing GCSE exams
Open-source Vanilla JS IDE clone of Google Antigravity
BYOK (Bring Your Own Key) model—API keys stored in localStorage
Zero dependencies, no build step required
Built by high school student in 'a few days' before exams
Early alpha stage with hardcoded UI placeholders
Live demo available with Gemini API integration
GitHub repo: ab-613/OpenGravity
Published on Hacker News (9 points, 5 comments at time of analysis)
Go to the source
Hacker Newsgithub.com
Publisher excerpt: Hi. I’m a high school student studying for my GCSEs. I was using Google Antigravity heavily for my side projects, but I kept hitting the usage limits, and getting random "agent terminated" errors. So I decided to try build my own version of the IDE. I love the UI, so I copied it as accurately as…