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Theia IDE

Theia IDE is a free, open-source development environment for cloud and desktop, built on the Theia Platform.

Place
#47 of 138
Score
7.2
Theia IDE's website

What Theia IDE is

Theia IDE is a free, open-source development environment for cloud and desktop, built on the Theia Platform. Users can choose cloud, self-hosted, or local AI models and create custom agents. It integrates with official SDKs for providers including OpenAI, Anthropic, and Google; AI data goes to the provider the user selects. The IDE supports VS Code extensions through Open VSX, though some Microsoft-proprietary extensions are unavailable and some extension API features may not work as expected. Language support uses the Language Server Protocol, including for Python, Java, JavaScript, and C++. Workspace Trust places untrusted folders in Restricted Mode and disables features that could execute code or read sensitive workspace content. The project notes that this protection is still maturing. The IDE does not collect or transmit user activity, project details, or code, though it can check for IDE and extension updates. The ready-to-use IDE is free. Its online test version is limited to 30 minutes per session. The underlying Theia Platform is modular, allowing adopters to build customized or white-labeled cloud and desktop IDEs and tools.

Good

  • Free and open source for cloud and desktop.
  • Supports cloud, self-hosted, and local AI models.
  • Language support includes Python, Java, JavaScript, and C++.
  • Restricted Mode limits features in untrusted workspaces.

Watch out

  • Online demo sessions are limited to 30 minutes.
  • Some Microsoft-proprietary extensions are unavailable.
  • Workspace Trust is still maturing.

Who it suits

Theia IDE suits developers seeking a ready-to-use IDE for cloud or desktop work, including those who want to select AI models or create agents. The Theia Platform is aimed at teams building customized or domain-specific development tools.

Verdict

Theia IDE combines language tooling, extension support, and configurable AI model choices in a free environment. Consider the online demo limit, extension gaps, and evolving workspace protections when evaluating it.

Plans and prices

From Theia IDE's own pricing page, checked 30 Sep 2026.

All about pricing
PlanPriceWhat it gives you
Theia IDEFreeOpen-source IDE · online demo limited to 30 minutes per session

The facts

Each one read from Theia IDE's own pages, with the date it was checked.

What it does

AI models
Theia IDE lets users choose cloud, self-hosted, or local AI models and create custom agents.checked 30 Sep 2026
AI providers
Theia integrates with official SDKs for providers including OpenAI, Anthropic, and Google, and sends AI data to the provider the user chooses.checked 30 Sep 2026
Customization
The Theia Platform is modular and allows adopters to build customized or white-labeled cloud and desktop IDEs and tools.checked 30 Sep 2026
Extensions
Theia supports VS Code extensions through Open VSX, but some Microsoft-proprietary extensions are unavailable and some extension API features may not work as expected.checked 30 Sep 2026
Intended users
Theia IDE is a ready-to-use general-purpose IDE, while the Theia Platform is aimed at building customized or domain-specific IDEs and tools.checked 30 Sep 2026
Languages
The IDE uses the Language Server Protocol for support of languages including Python, Java, JavaScript, and C++.checked 30 Sep 2026
Online demo limit
The online test version is limited to 30 minutes per session.checked 30 Sep 2026
Support
Community help is available through GitHub Discussions, and professional support, training, and development services are offered by contributing companies.checked 30 Sep 2026
Telemetry
Theia IDE does not collect or transmit user activity, project details, or code, though it can check for IDE and extension updates.checked 30 Sep 2026
Trust limitations
Workspace Trust is still maturing; some extensions with limited untrusted-workspace support are treated as supported, and some subsystems may need more integration.checked 30 Sep 2026
What it is
Theia IDE is an open-source, AI-native IDE for cloud and desktop, built on the Theia Platform.checked 30 Sep 2026
Workspace security
Workspace Trust uses Restricted Mode for untrusted folders and disables features that could execute code or read sensitive workspace content.checked 30 Sep 2026

Money

Free plan
Yeschecked 20 Sep 2026

Where it runs

Platforms
Theia IDE offers desktop downloads for Windows, Linux, and macOS, plus an online demo and an experimental Docker image for online hosting.checked 30 Sep 2026

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