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