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Theia IDE vs Cursor: catalog facts
Theia IDE	Cursor
Free Free and open source.	Freemium A free tier is available, with paid plans for more model usage.
Windows, macOS, Linux, Web	macOS, Command line
Runs VS Code extensions from Open VSX Available on desktop and online	Familiar VS Code base and editing model Agents that work across multiple files
Uses Open VSX rather than the Microsoft extension marketplace Smaller user community than VS Code	AI features depend on hosted models Heavier use requires a paid plan
Downloadable app, Web application	Downloadable app, Hosted service
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.