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Eclipse IDE for Java and DSL Developers vs JetBrains MPS: catalog facts
Eclipse IDE for Java and DSL Developers	JetBrains MPS
Free Free and open source, maintained under the Eclipse Foundation.	Free Free to download, with optional paid services from JetBrains.
Windows, macOS, Linux	Windows, macOS, Linux
Bundles Java and DSL tooling in one download Long-established project with vendor-neutral governance	Projectional editor supports tables, diagrams and math notation Editor support with quick fixes and completion for custom languages
Foundation homepage gives little product-specific detail Heavier than lightweight code editors	Steep learning curve for language design Specialised tool rather than a general code editor
Downloadable app	Downloadable app
Open source	Open source
License: EPL-2.0	License: Apache-2.0
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.