The Eclipse theia Platform
An Open, Flexible and Extensible Platform to efficiently develop and deliver Cloud & Desktop IDEs and tools with modern web technologies. With theia AI the platform includes native support for building AI-powered tools and IDEs. The theia IDE is a standard IDE built on the theia Platform.​
Get started with the theia PlatformLearn more about theia AIExplore the theia IDE
Learn about the latest 1.64 Release and the latest Community Release (2025-08).​
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The Call for Presentations is now OPEN for the 2025 theiaCon!
(Virtual Event | 29 - 30 October, 2025) Submit your proposal today to be a speaker and get registered!
Selected Tools based on Eclipse theia​
Mbed Studio by Arm
CDT Cloud Blueprint
Coffee editor Example by EclipseSource
logi.cloud by logi.cals
theia IDE
Record Evolution Screenshot
VUEngine Studio
Smartface
Code RealTime
QuickConnect Studio
Red Hat CodeReady workspaces
Martini Designer
MVTec HDevelopEVO
Coding Park Web IDE
Cloud & Desktop​
Not sure whether you need a web or desktop version or both?
With theia you can develop one IDE and run it in a browser or as a native desktop application from a single source.
Extensible​
theia is designed in a modular way to allow extenders and adopters to customize and extend every aspect.
This goes way beyond “just adding extensions”, because Eclipse theia lets you build fully customized or white-labeled products!
Vendor Neutral​
theia is truly vendor-neutral and developed by a diverse community. Unlike other “open source” projects, theia is actually hosted at an Open-Source Foundation, protecting it against single-vendor decisions. Learn more here. This vendor neutrality also means multiple companies offer professional support.
Modern Tech​
theia is built on a modern web technology stack, offering language support via LSP and DAP, hosting VS Code extensions, and providing full terminal access.
While it reuses components from VS Code, such as the Monaco editor, theia is an independent platform with a modular architecture—not a fork of VS Code.
🚀Building solutions with theia Platform?​
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Contributors & Adopters​
How to get listed as an Eclipse theia adopter/contributor
Getting started with the Eclipse theia Platform​
Try it​
Eclipse theia is a framework for building tools and IDEs. You can try it by building your own IDE/tools based on theia within minutes. Alternatively, you can download and use the theia IDE, a template tool based on Eclipse theia or try it online.
Learn more​
Learn more about Eclipse theia, how to get started with it, how to build your own tool/IDE and about the project's goals. Browse the documentation and resource section. Also, checkout the available introduction video below!
Adopt it​
Checkout the available releases including changelogs, migration guides and news and noteworthy articles. Browse the project's sources and consume/download theia packages from the npm registry. Need help with adoption? Get professional support.
Contribute​
Eclipse theia is an open source project governed by the Eclipse Foundation. We are happy for any contributions! Please check out the contribution guide, our code of conduct and consider starting with good first issues.
Introductions to Eclipse theia​
#### Getting started with Eclipse theia
Jonas Helming, theia project lead and Principal Software Architect at EclipseSource
#### Why Eclipse theia
Marc Dumais, theia project lead and Software Developer at Ericsson AB
#### How to be an Eclipse theia Adopter
Jonas Helming, theia project lead and Principal Software Architect at EclipseSource
#### The Eclipse theia Architecture
Thomas Mäder, theia project lead and Principal Software Developer at Red Hat