Open Source StarUML AlternativesUML Modeling Tools and other similar apps like StarUML

The best open source alternative to StarUML is PlantUML. If that doesn't suit you, our users have ranked more than 50 alternatives to StarUML and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to StarUML are Mermaid, Umbrello, UMLet and PathVisio.

StarUML alternatives are mainly UML Modeling Tools but may also be Diagram Editors or Mind Mapping Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of StarUML.

StarUML

Paid • Proprietary
UML Modeling Tool

StarUML is a program to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on...

More about StarUML

StarUML alternatives page was last updated

PlantUML
Is this is a good alternative?
Yes
No
Free • Open Source
Mind Mapping Tool
Diagram Editor
UML Modeling Tool
Mac
Windows
Linux
Online
Android
Chrome OS
111 PlantUML alternatives
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 application such as wiki, text editor, IDE, programming language, documentation generator, and others.
- - PlantUML is the most popular Open Source alternative to StarUML.
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PlantUML Features
1. PortablePlantUML can be used from a USB stick or similar with no prior installation.
2. Support for MarkDownPlantUML supports MarkDown for document formatting.
Text Based Format
Java based
VCS Friendly
Workflow
Flow Chart
Rendering
Create UML entities
Opinions about PlantUML as a Alternative to StarUML
Most users think PlantUML is a great StarUML alternative.
Mermaid
Is this is a good alternative?
Yes
No
Free • Open Source
Diagram Editor
Mac
Windows
Linux
Online
Self-Hosted
JavaScript
Node.JS
19 Mermaid alternatives
Ever wanted to simplify documentation and avoid heavy tools like Visio when explaining your code? This is why mermaid was born, a simple markdown-like script language for generating flowcharts, Gantt charts and sequence diagrams from text via JavaScript.
- - Mermaid is the most popular Self-Hosted alternative to StarUML.
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Mermaid Features
Flow Chart
Graphs
Umbrello
Is this is a good alternative?
Yes
No
Free • Open Source
UML Modeling Tool
Mac
Windows
Linux
48 Umbrello alternatives
Umbrello is a Unified Modelling Language (UML) modelling tool and code generator. It can create diagrams of software and other systems in the industry-standard UML format, and can also generate code from UML diagrams in a variety of programming languages.
Umbrello has no features, suggest some!
UMLet
Is this is a good alternative?
Yes
No
Free • Open Source
Diagram Editor
Windows
35 UMLet alternatives
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 Eclipse, and create new, custom UML elements.
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UMLet Features
1. Extensible by Plugins/ExtensionsUMLet can be extended with add-ons, plugins and extensions.
Plug-ins
Java based
Content Templates
Drag and Drop
PathVisio
Is this is a good alternative?
Yes
No
Free • Open Source
Digital Painting Tool
Online
73 PathVisio alternatives
PathVisio is a free open-source pathway analysis and drawing software that allows drawing, editing and analysing biological pathways. It provides a basic set of features for pathway drawing, analysis and visualization. Additional features as plugins.
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PathVisio Features
Flow Chart
Papyrus UML
Is this is a good alternative?
Yes
No
Free • Open Source
UML Modeling Tool
Mac
Windows
Linux
Eclipse
38 Papyrus UML alternatives
Graphical modelling open source UML2 tool based on Eclipse environment.
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Papyrus UML Features
SysML
Modelio
Is this is a good alternative?
Yes
No
Free • Open Source
UML Modeling Tool
Windows
Linux
Eclipse
32 Modelio alternatives
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 process modeling. It is easy and powerful with the capacity to add new functionalities to the application.
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Modelio Features
1. PortableModelio can be used from a USB stick or similar with no prior installation.
SysML
NClass
Is this is a good alternative?
Yes
No
Free • Open Source
Windows
26 NClass alternatives
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 and fast development. Properties, enums, delegates and other language specific elements are fully supported...
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NClass Features
Class Diagrams
Discontinued
Since 2010
Violet UML Editor
Is this is a good alternative?
Yes
No
Free • Open Source
UML Modeling Tool
Mac
Windows
Linux
31 Violet UML Editor alternatives
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, students, teachers, and authors who need to produce simple UML diagrams quickly.
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Violet UML Editor Features
State machine
Sequence Diagrams
Flow Chart
Dynamic Draw
Is this is a good alternative?
Yes
No
Free • Open Source
Windows
52 Dynamic Draw alternatives
A Powerful idea processor.It's Open Source and Freeware. Create UML Diagrams, Network Diagrams, Flowcharts and many other types of diagrams with the versatile Dynamic Draw Software.
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Dynamic Draw Features
1. PortableDynamic Draw can be used from a USB stick or similar with no prior installation.
Class Diagrams
Flow Chart
js-sequence-diagrams
Is this is a good alternative?
Yes
No
Free • Open Source
Diagram Editor
Online
Self-Hosted
6 js-sequence-diagrams alternatives
A simple JavaScript library to turn text into vector UML sequence diagrams. Heavily inspired by websequencediagrams.com, who offer a server-side solution. js-sequence-diagrams uses Jison to parse the text, and Snap.svg to draw the image.
js-sequence-diagrams has no features, suggest some!
WhiteStarUML
Is this is a good alternative?
Yes
No
Free • Open Source
Windows
35 WhiteStarUML alternatives
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 and fixing bugs and adding new features.
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WhiteStarUML Features
Support for Unicode
Discontinued
The last update is from March 2018.