BetterGravity — Open-source UI customizer, Desktop Pets, and In-App Browser for Google Antigravity

browser-showcase

Hi everyone,

I wanted to share an open-source project I’ve been building for the Google Antigravity community called BetterGravity.

Antigravity has been fantastic for agentic workflows, but I wanted to add a few power-user ergonomics, personalization features, and developer capabilities directly into the local desktop experience.

What BetterGravity adds:

- In-App Chromium Browser: Allows the agent to autonomously browse, test web applications, and inspect live DOM state side-by-side with chat.

- Revamped Gemini Workspace: Willow-inspired design system with dedicated sidebar tabs for Chat, Work, Skills, and Scheduled Tasks.

- Interactive Desktop Companions: 17+ animated pixel companions that react and code alongside your agent in real time.

- Bring Your Own Key (BYOK): Connect your own official Google AI Studio / Gemini API key directly to stream raw model reasoning & thinking tokens.

- Theme & Plugin Engine: Load custom CSS themes and local JS plugins with zero build step and hot reloading.

Architecture & Safety:

- Local-only client extension: Injects safely at startup without modifying user files, workspace repositories, or credentials.

- Fully reversible: Preserves backups of the original bundle; can be cleanly uninstalled byte-for-byte anytime.

- Free & Open Source: Licensed under MIT.

GitHub Repository: GitHub - YashjitPal/BetterGravity · GitHub

Would love to hear feedback, feature ideas, or thoughts from other Antigravity developers!

Here’s a closer look at the Pets feature

Here’s the home section of the app

Here’s a closer look of the in-chat experience