# Theatre.js

> Apache-2.0 motion design editor for the web

**Category:** Libraries  
**Pricing:** open-source  
**URL:** https://www.theatrejs.com  
**GitHub:** https://github.com/theatre-js/theatre  
**Added:** 2026-09-06

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## The Hook

Theatre.js is the scrubbable motion-design editor for Three and DOM timelines.

## What's Good

Apache-2.0. Studio UI plus runtime, sequence editing for web animation stacks.

## The Catch

Core repo quiet since mid-2024 - still used, watch maintenance. Distinct from Threlte and Rive/Lottie authored runtimes.

## Verdict

Apache-2.0 web motion studio. Free forever.