PlantUML

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various...

Free Open Source Mac Windows Linux Web Android ... Chrome OS

StarUML

StarUML is a program to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on Win32 platform. The goal of the StarUML project...

Free Personal Mac Windows Linux

Visual Paradigm

Visual Paradigm for UML (VP-UML) is a UML design tool and UML CASE tool designed to aid software development. VP-UML supports key modeling standards such as Unified...

Free Personal $ $ $ Mac Windows Linux

UMLet

UMLet is an open-source UML tool with a simple user interface: draw UML diagrams fast, export diagrams to eps, pdf, jpg, svg, and clipboard, share diagrams using...

Free Open Source Windows

Modelio

Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI. It allows to draw all UML2 diagrams and specific diagrams for business...

Free Open Source Windows Linux Eclipse

Software Ideas Modeler

Lightweight, powerful, easy to use, UML tool Software Ideas Modeler is a lightweight and powerful CASE tool. It supports UML 2.2 diagrams and a lot of other ones....

Free Personal Windows

Papyrus UML

Graphical modelling open source UML2 tool based on Eclipse environment.

Free Open Source Mac Windows Linux Eclipse

WhiteStarUML

WhiteStarUML is a fork of StarUML with an intent to revive its Delphi code base by updating code to recent Delphi editions, reducing dependence on third party components...

Free Open Source Windows

Violet UML Editor

Violet is a UML editor with these benefits: Very easy to learn and use. Draws nice-looking diagrams. Completely free. Cross-platform. Violet is intended for developers...

Free Open Source Mac Windows Linux

UMLGraph

UMLGraph allows the declarative specification and drawing of UML class and sequence diagrams. The current features are part of an ongoing effort aiming to provide...

Free Open Source Mac Windows Linux

NClass

NClass is a free tool to easily create UML class diagrams with full C# and Java language support. The user interface is designed to be simple and user-friendly for easy...

• Discontinued Since 2010

Free Open Source Windows Linux

astah Community Edition

Astah Community is an add-on tool for your UML that is ready to use the instant you download it, allowing your UML to be quickly and easily enhanced, and refining your...

• Discontinued Discontinued from September 2018. Cannot be downloaded anymore.

Free Windows Linux

ObjectAid

The ObjectAid UML Explorer is an agile and lightweight code visualization tool for the Eclipse IDE. It shows your Java source code and libraries in live UML class and...

Freemium Mac Windows Linux

SEQO

SEQO generates UML sequence diagrams from a simple text. A sequence diagram is an interaction diagram that shows how objects operate with one another and in what order.

Free Mac Windows

jsUML2

A lightweight HTML5/javascript library for UML 2 diagramming. Alpha software. This project is in progress. Many functionalities are ready to be used. Nevertheless...

Free Open Source Web JavaScript