kitio.aiAdded Nov 5, 2026
Theia IDE
FreeOpen-source AI-native IDE for desktop and browser
What is Theia IDE?
Theia IDE is an open-source code editor from the Eclipse Theia project that runs on the desktop or in the browser and builds AI assistance into its core. You connect your own API key or a local model, and it sends no telemetry on your code or prompts.
Any provider can be used, including OpenAI, Anthropic, Google, self-hosted or fully local models, and requests go straight to that provider rather than through a third-party proxy. That makes it a fit for teams with strict data rules who want an open alternative to Copilot or Cursor.
Theia is not a VS Code fork, but it runs VS Code extensions such as Python, GitLens, ESLint and Docker, and uses the Language Server Protocol for many languages. The underlying Theia Platform and Theia AI framework let companies build their own custom AI-native tools and IDEs.
Features
- Built-in AI assistance
- Any model, including local
- VS Code extension support
- Desktop and browser versions
- No telemetry on code
Tags
Releases
+ Submit new release- Listed
Theia IDE was added to the directory.
Organization
Eclipse Foundation
Listed by kitio.ai · unverified owner
Pricing
- Pricing model
- Free
- Paid options from
- 100% free
Sponsored
Your AI tool here
A Featured launch puts your tool in this spot and on the home page for a week.
Top Theia IDE alternatives
View allCoding
Free open-source editor with built-in AI agents for coding
Coding
Fast Rust code editor with built-in AI agents and edit predictions
Coding
AI code editor that edits across your whole codebase
Coding
Open-source, model-agnostic coding agent for the terminal
Compare Theia IDE
If you liked Theia IDE
Cross-platform AI client for many models, with or without API keys
Freemium · $3.99/moChat assistantsOpen-source local frontend for roleplay with any LLM backend
FreeChat assistants4 views3 clicks to the websiteAgentic IDE from AWS built around specs before code
Freemium · $20/moCoding7 views2 clicks to the websiteMade in United StatesOpen standard for connecting AI apps to tools, data and workflows
FreeCoding1 views1 clicks to the websiteAI code editor from Cognition, formerly called Windsurf
Freemium · $20/moCoding3 views2 clicks to the websiteMade in United States
Pros and cons
Pros
- Free and fully open source
- Use any AI provider or local model
- Runs VS Code extensions
Cons
- You pay your own model provider
- Smaller community than VS Code
- Some extensions may not behave identically
Prompts & results
No prompts yet. Add your own prompt and output to help others use this tool.
Share a prompt
Reviews
Q&A
What is Theia IDE?
Theia IDE is an open-source code editor from the Eclipse Theia project that runs on the desktop or in the browser and builds AI assistance into its core. You connect your own API key or a local model, and it sends no telemetry on your code or prompts.
Can Theia IDE use a local AI model?
Yes. You can connect cloud providers, self-hosted models or fully local models with your own keys.
Does Theia IDE support VS Code extensions?
Yes. It is compatible with the VS Code extension ecosystem even though it is a separate codebase, not a fork.
How much does Theia IDE cost?
Theia IDE is 100% free.
Is there a free version of Theia IDE?
Yes. Theia IDE is completely free to use.
What are the main features of Theia IDE?
Built-in AI assistance, Any model, including local, VS Code extension support, Desktop and browser versions, No telemetry on code.
Who makes Theia IDE?
Theia IDE is made by Eclipse Foundation.
What are the best alternatives to Theia IDE?
Popular alternatives include Visual Studio Code, Zed, Cursor.