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Eclipse Papyrus
What it is
Eclipse Papyrus is a modeling environment dedicated to UML and its extensions, offered as a free open-source Model-Based Engineering tool for industry and academia. Its implemented standards include UML 2.5, SysML 1.6, fUML 1.3, ALF 1.0.1, MARTE 1.1, PSCS 1.1, PSSM 1.0, and ISO/IEC 42010. Users can customize profiles, model explorers, diagram notation and style, properties views, palettes, and creation menus. With Moka, models can be executed through an animation and simulation framework. Papyrus-Web runs in a browser on a server and lets multiple users work on the same model simultaneously, with changes visible to stakeholders. Its web editors cover class, composite structure, component, profile, use case, activity, state machine, and communication diagrams. Desktop downloads are listed for 64-bit Windows and Linux, as well as Intel and Apple Silicon Macs; Papyrus requires a Java 21-compatible JVM. Related tools include Papyrus Designer for code generation and reverse engineering in C++, C, Java, and Python, and Papyrus-Model2Doc for documentation output to LibreOffice, Word, and PDF. Community resources include a wiki, discussions, mailing lists, issue trackers, Git repositories, and Jenkins.
For and against
For
- Implements UML, SysML, and other listed standards.
- Supports customizable modeling views and diagram styles.
- Moka provides model animation and simulation.
- Papyrus-Web enables simultaneous shared-model work.
- Desktop downloads cover Windows, Linux, and macOS.
Against
- Requires a Java 21-compatible JVM.
- Web collaboration runs on a server.
- Desktop downloads are specifically listed for 64-bit Windows and Linux.
The verdict
Papyrus combines UML-focused modeling, extensive customization, and desktop and browser-based options. Check the Java runtime requirement and the server-based nature of Papyrus-Web when choosing a deployment approach.
Who it suits
Papyrus may suit engineering teams or academic users building UML-based models and related diagrams. Its web option also suits groups that need to work simultaneously on a shared model.
Plans and prices
Eclipse Papyrus
Open source modeling environment; no usage limits stated
Read 4 Oct 2026 · eclipse.dev
On the record
- Customization
- Users can customize profiles, model explorers, diagram notation and style, properties views, palettes, and creation menus.eclipse.dev · read 4 Oct 2026
- Desktop systems
- Papyrus-Desktop downloads are listed for 64-bit Windows and Linux, and macOS for Intel and Apple Silicon.eclipse.dev · read 4 Oct 2026
- Extensions
- Listed related tools include Papyrus Designer for code generation and reverse engineering in C++, C, Java, and Python, and Papyrus-Model2Doc for generating documentation for LibreOffice, Word, and PDF.eclipse.dev · read 4 Oct 2026
- Intended users
- The project describes Papyrus as an industrial-grade open source Model-Based Engineering tool and calls it industry ready and academia friendly.eclipse.dev · read 4 Oct 2026
- License
- The download page says Papyrus is released under the Eclipse Public License v2.0.eclipse.dev · read 4 Oct 2026
- Model execution
- With Moka, Papyrus can execute models using an animation and simulation framework.eclipse.dev · read 4 Oct 2026
- Purpose
- Eclipse Papyrus is a modeling environment dedicated to UML and its extensions.eclipse.dev · read 4 Oct 2026
- Runtime requirement
- The download page says Papyrus requires a Java 21 compatible JVM.eclipse.dev · read 4 Oct 2026
- Self hosting
- The Papyrus-Web page says users can test it on their computer with Rancher Desktop or Docker Desktop and links to deployment documentation.eclipse.dev · read 4 Oct 2026
- Standards
- The site lists UML 2.5, SysML 1.6, fUML 1.3, ALF 1.0.1, MARTE 1.1, PSCS 1.1, PSSM 1.0, and ISO/IEC 42010 as implemented standards.eclipse.dev · read 4 Oct 2026
- Support and community
- The community page lists a wiki, discussions, developer mailing list, issue trackers, Git repositories, and Jenkins as user and developer resources.eclipse.dev · read 4 Oct 2026
- Web collaboration
- Papyrus-Web runs on a server in a web browser and lets multiple users work simultaneously on the same model with changes visible to all stakeholders.eclipse.dev · read 4 Oct 2026
- Web diagrams
- Papyrus-Web provides editors for class, composite structure, component, profile, use case, activity, state machine, and communication diagrams.eclipse.dev · read 4 Oct 2026
