Umple

What it does

AI privacy

UmpleOnline states that its AI feature's API key is never sent to its server backend.checked 3 Oct 2026

Audience

The site says Umple can be used in real industry systems and has also helped students learn software design in the classroom.checked 4 Oct 2026

Availability

The project repository says Umple runs on Mac, Linux, and Windows and requires Java for local use.checked 3 Oct 2026

Cloud data retention

UmpleOnline automatically stores models and generated outputs on Digital Research Alliance of Canada servers, normally deleting them after a few days; permanent URLs are normally kept for two years after the last edit.checked 4 Oct 2026

Code generation

Umple generates code in languages including Java, Python, PHP, Ruby, and C++; the manual notes that Ruby support is partial and C++ is still beta.checked 4 Oct 2026

Command line

The command-line compiler can be incorporated into toolchains using technologies such as Gradle or Ant.checked 3 Oct 2026

Data handling

UmpleOnline says it stores user data in cookies and on a server.checked 3 Oct 2026

Diagrams and analysis

Umple can generate UML class and state diagrams, entity-relationship diagrams, formal methods code, state tables, and metrics.checked 4 Oct 2026

Editors

The manual lists plugins or support for Visual Studio Code, Zed, BBEdit, Neovim, and Sublime; it says the Eclipse plugin has not been maintained recently and support may be dropped.checked 3 Oct 2026

Integrations

The manual describes support for Visual Studio Code, BBEdit, Zed, Neovim, Sublime, the command line, and an Eclipse plugin that has not been maintained recently.checked 4 Oct 2026

Intended users

The project describes Umple as usable for real systems in industry and says it has helped students learn software design in classrooms.checked 3 Oct 2026

License

The manual says all use of Umple and UmpleOnline is subject to the Umple MIT license.checked 4 Oct 2026

Local deployment

A Docker image can run UmpleOnline locally in a web browser, with model data stored on the user's machine.checked 4 Oct 2026

Local use

UmpleOnline can be run locally through a Docker image, with a browser connecting to a locally running server.checked 3 Oct 2026

Modeling

It adds abstractions such as associations, attributes, and state machines to object-oriented languages including Java, Python, C++, and PHP.checked 3 Oct 2026

Online editor

UmpleOnline lets users edit models in text or diagrams, generate code, and save examples in the cloud.checked 4 Oct 2026

Online limits

UmpleOnline is intended for exploration, particularly in education, and supports only a small number of Umple files per user session; the manual recommends the command-line tool or an IDE for serious development with many files.checked 4 Oct 2026

Outputs

The command-line compiler lists Java, PHP, Ruby, SQL, JSON, Ecore, TextUML, SCXML, and Yuml among its generation targets.checked 3 Oct 2026

Privacy

UmpleOnline currently has no login mechanism, and its manual says model content is accessible to site maintainers and anyone with or able to guess its URL.checked 4 Oct 2026

Purpose

Umple is a modeling tool and programming language family for Model-Oriented Programming.checked 3 Oct 2026

Security and compliance

The manual states that Umple is not validated for safety-critical or mission-critical use and should not be used for those purposes.checked 4 Oct 2026

Support

The site links to the user manual, question and help mailing lists, and GitHub issue reporting for help and problem reports.checked 4 Oct 2026

What it does

Umple is a modeling tool and programming language family for model-oriented programming that adds abstractions such as associations, attributes, and state machines to object-oriented languages.checked 4 Oct 2026