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Theia IDE vs Visual Studio: catalog facts
Theia IDE	Visual Studio
Free Free and open source.	Freemium Community edition is free; Professional and Enterprise are paid.
Windows, macOS, Linux, Web	Windows
Runs VS Code extensions from Open VSX Available on desktop and online	Complete toolset for .NET and C++ projects IntelliSense code completion and an integrated debugger
Uses Open VSX rather than the Microsoft extension marketplace Smaller user community than VS Code	Large install compared with a plain code editor Professional and Enterprise editions are paid
Downloadable app, Web application	Downloadable app
Open source	Closed source
License not stated	License: Proprietary
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.