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Theia IDE vs Apache NetBeans: catalog facts
Theia IDE	Apache NetBeans
Free Free and open source.	Free Free and open source under the Apache License 2.0.
Windows, macOS, Linux, Web	Windows, macOS, Linux
Runs VS Code extensions from Open VSX Available on desktop and online	Strong Java support with semantic highlighting and refactoring Project wizards and templates for Java and PHP
Uses Open VSX rather than the Microsoft extension marketplace Smaller user community than VS Code	Heavier than lightweight editors Tutorials are partly under review
Downloadable app, Web application	Downloadable app
Open source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	No account 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.