Hey, Patrick. I heard it’s urgent—what’s up?
Hey! Man, you guys are fast. Appreciate it.
So, some of our users are getting frustrated. We’ve optimized the language server on our end, but the editor still feels sluggish when they’re working.
Hmm, that's odd. Our tooling should be pretty snappy. How big are their workspaces?
Big. Tens of thousands of files. Some of them are massive, too.
Wow, okay. Let me take a look.
I was afraid you’d say it’s unfixable.
Well, Patrick... you’re right. This won’t work for you.
Damn.
Not at that scale, no.
Yet.
Developing highly specialized solutions since 2016.
A decade of innovation: Cheers to our tools and solutions!
OPEN VSX
The Marketplace Liberator
Unlocks the VS Code extension universe for IDEs and custom platforms.
OPEN VSX
The Marketplace Liberator
Eclipse Open VSX started as a lockpick—and became public infrastructure. When the VS Code Marketplace was out of reach for independent IDEs, we opened the gates. As a vendor-neutral registry under the Eclipse Foundation, Open VSX unleashes the extension ecosystem for Theia, Cursor, Antigravity, VSCodium, and many more. Backed by industry and trusted worldwide, it keeps innovation portable and fair—so your tooling strategy isn't tied to a single vendor's permission.
OCT
The Omnipresent Octopus
Connects in real time and keeps code perfectly in sync.
OCT
The Omnipresent Octopus
Eclipse Open Collaboration Tools extend their arms across IDEs and web apps, keeping everyone in a synchronized embrace. Developers remain in VS Code or Theia, domain experts join from a browser, and all share the exact same live state. Edits, cursors, and selections ripple instantly across environments, secured with end-to-end encryption and ready for on-prem setups. Built on an extensible open protocol, OCT doesn't stop at text—it coordinates domain-specific editors and custom views with effortless reach.
THEIA
The Platform Alchemist
Transmutes a web-native core into a fully customized IDE.
THEIA
The Platform Alchemist
Eclipse Theia began with a simple but daring experiment: can an IDE core be reshaped into anything you need? As a true Platform Alchemist, it transmutes a web-native foundation into fully customized developer environments— desktop or cloud, product or platform. Built in TypeScript and governed by the Eclipse Foundation, it powers industrial toolchains at Arm, Arduino, IBM, Texas Instruments, and beyond. And it keeps evolving — now fueling AI-driven workflows that redefine how tools are built and used.
TYPIR
The Jungle Type Tamer
Handles inference, subtyping and validation with calm precision.
TYPIR
The Jungle Type Tamer
Typir ventures deep into the jungle of type systems—where inference, subtyping, and assignability tend to grow wild. With Wild Type Mastery, it provides ready-made building blocks for primitives, functions, operators, and classes, plus pragmatic defaults that keep your type graph consistent and predictable. Instead of wrestling complex algorithms, you declare your rules and let Typir enforce them. Integrated with Langium or used standalone, it turns semantic wilderness into a well-balanced ecosystem.
LANGIUM
The Web Wizard of Languages
Transforms complex ideas into simple domain-specific languages.
LANGIUM
The Web Wizard of Languages
Eclipse Langium practices a very pragmatic kind of magic. Write a declarative grammar, and it conjures a full language stack: parser, validation, linking, and rich IDE support included. Inspired by Xtext and rebuilt in TypeScript, it runs the same spell in VS Code, Theia, Node.js, or directly in the browser. With millions of downloads each week, Langium has become the go-to grimoire for teams building modern DSLs—structured, extensible, and ready for real-world systems.
SPROTTY
The Deep-Sea Cartographer
Renders deep models as fast, reactive visual diagrams.
SPROTTY
The Deep-Sea Cartographer
Eclipse Sprotty charts the deep waters of complex systems. Built for the web, it cleanly separates semantic models from lightweight views and keeps updates fast and reactive. With Abyssal Vision, even dense structures stay navigable—filtered, highlighted, and automatically laid out with ELK. From computed projections to fully interactive editors like Eclipse GLSP, Sprotty turns model depth into clarity and helps you explore without getting lost at sea.
XTEXT
The Language Blacksmith
Turns formal grammars into full-featured language tooling.
XTEXT
The Language Blacksmith
Eclipse Xtext is the original forge where our language journey took shape. With its Grammar Forge, a formal grammar goes in—and a full language infrastructure comes out: parser, linker, validator, code generation, and rich IDE tooling included. For more than a decade, it has powered industrial DSLs from embedded systems to finance. Battle-tested and deeply rooted in the Eclipse ecosystem, Xtext set the standard others still measure themselves against.
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Pull requests merged
«We believe in our continual investment in open source. Instead of settling for something that’s “good enough”, we continue to aim for something better.»
Ben Wilson, Senior Software Engineer
«Understanding our customers’ needs is the foundation of everything we do.»
Dr. Johannes Meier, Senior Software Engineer
«A small team in northern Germany creates tools that change how software is developed worldwide.»
Daniel Dietrich, CEO
«We’re already thinking about what will help our customers tomorrow. There’s no stopping at what we have today.»
Dr. Insa Fuhrmann, Senior Project Manager
«The opportunity to make the life of our clients and of users of the tools we develop a bit better each and every day.»
Christian Schneider, Senior Software Engineer
«We believe in our continual investment in open source. Instead of settling for something that’s “good enough”, we continue to aim for something better.»
Ben Wilson, Senior Software Engineer
«Understanding our customers’ needs is the foundation of everything we do.»
Dr. Johannes Meier, Senior Software Engineer
Building in the open, collaborating with the community
We always have each other’s backs—and customers can trust us too
Fearless in trying new ideas and driving things forward
Learning and growing every day—that’s what drives us forward
What will we celebrate in 10 years? Let's connect and build it together!
