Best Open Source UML Tools 2025

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Browse free open source UML tools and projects below. Use the toggles on the left to filter open source UML tools by OS, license, language, programming language, and project status.

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1

Yaoqiang BPMN Editor

an Open Source BPMN 2.0 / DMN 1.1 Modeler

Yaoqiang BPMN Editor is a graphical editor for business process diagrams, compliant with OMG specifications (BPMN 2.0 / DMN 1.1).

25 Reviews

Downloads: 63 This Week

Last Update: 2025-06-07
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2

Yaoqiang XPDL Editor

Yaoqiang XPDL Editor (YXE) is a graphical editor for workflow process definitions, compliant with WfMC specifications( XPDL 2.1 and 1.0 )

Downloads: 2 This Week

Last Update: 2013-05-12
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3

AgilPro

AgilPro is an Eclipse based business process modeling suite

AgilPro is an Eclipse based business process modeling suite providing a Business Process Modeler [LiMo - Light Modeler], a desktop application to preview and run processes [Simulator] and Application Adapters to plug in standard apps: Firefox, OpenOffice

1 Review

Downloads: 1 This Week

Last Update: 2013-04-26
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4

JPEd

JPEd is a graphical editor for processes descriptions. It uses the XPDL 1.0 interchange format as specified by the WfMC.

Downloads: 0 This Week

Last Update: 2018-05-18
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5

W2g

W2g is a framework for building web-based applications such as online databases, intranet portals or CRM systems. It has a object-oriented design and includes a session management, a template engine and a persistency engine based on Apache and MySQL.

Downloads: 0 This Week

Last Update: 2013-03-21
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