Best Open Source Windows UML Tools 2026

UML Tools for Windows

View 1926 business solutions

UML Windows Dutch Clear Filters

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

MongoDB Atlas runs apps anywhere
Deploy in 115+ regions with the modern database for every enterprise.

MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.

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Peer to Peer Recognition Brings Teams Together
The modern employee engagement platform for the modern workforce

Create a positive and energetic workplace environment with Motivosity, an innovative employee recognition and engagement platform. With Motivosity, employees can give each other small monetary bonuses for doing great things, promoting trust, collaboration, and appreciation in the workplace. The software solution comes with features such as an open-currency open-reward system, insights and analytics, dynamic organization chart, award programs, milestones, and more.

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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: 43 This Week

Last Update: 2025-06-07
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2

JAG

JAG - the Java Application Generator - is a 100% Java application that generates working projects containing complete, best-of-breed J2EE applications.

1 Review

Downloads: 2 This Week

Last Update: 2013-04-08
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3

Accessible Music Production Software

The AccessMusic project provides a set of tools for creating accessible music which are freely available to download. These tools allow you to convert music scores from traditional western music notation to formats for the Blind and visually impaired.

Downloads: 0 This Week

Last Update: 2017-10-19
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4

Gaphor

Gaphor is a UML modeling environment written in Python. Gaphor is small and very extensible. The repository is located at http://github.com/gaphor/gaphor.

Downloads: 0 This Week

Last Update: 2019-11-09
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Build experiences that drive engagement and increase transactions
Connect your users - doctors, gamers, shoppers, or lovers - wherever they are.

Sendbird's chat, voice, and video APIs power conversations and communities in hundreds of the most innovative apps and products. Sendbird’s feature-rich platform, and pre-fab UI components make developers more productive. We take care of a ton of operational complexity under the hood, so you can power a rich chat service, and life-like voice, and video experiences, and not worry about features, edge cases, reliability, or scale.

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