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KompoZer vs StarUML

Professional comparison and analysis to help you choose the right software solution for your needs.

KompoZer icon
KompoZer
StarUML icon
StarUML

KompoZer vs StarUML: The Verdict

⚡ Summary:

KompoZer: KompoZer is a free and open source WYSIWYG HTML editor and web authoring system. It is designed to be easy for beginners to use but also has advanced features for experienced web developers. KompoZer can be used to create and edit HTML documents and web pages easily without hand coding.

StarUML: StarUML is an open-source UML modeling tool for software developers. It supports all standard UML 2.x diagrams and can generate code frameworks. StarUML runs on Windows, Linux and Mac OS.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature KompoZer StarUML
Sugggest Score — —
Category Development Development
Pricing Free Open Source

Product Overview

KompoZer
KompoZer

Description: KompoZer is a free and open source WYSIWYG HTML editor and web authoring system. It is designed to be easy for beginners to use but also has advanced features for experienced web developers. KompoZer can be used to create and edit HTML documents and web pages easily without hand coding.

Type: software

Pricing: Free

StarUML
StarUML

Description: StarUML is an open-source UML modeling tool for software developers. It supports all standard UML 2.x diagrams and can generate code frameworks. StarUML runs on Windows, Linux and Mac OS.

Type: software

Pricing: Open Source

Key Features Comparison

KompoZer
KompoZer Features
  • WYSIWYG editor
  • Built-in FTP client
  • Spell checking
  • HTML tidy feature to clean up code
  • CSS Style designer
  • Site manager to manage large sites
  • Supports HTML 4 and XHTML 1.0 standards
StarUML
StarUML Features
  • Diagramming
  • Code generation
  • Extensibility
  • Model validation
  • Version control integration

Pros & Cons Analysis

KompoZer
KompoZer

Pros

  • Free and open source
  • Easy to use for beginners
  • Powerful features for advanced users
  • Cross-platform - works on Windows, Mac and Linux

Cons

  • Development has stopped, no updates since 2012
  • Limited CSS 3 and HTML 5 support
  • Not as feature rich as some paid alternatives
StarUML
StarUML

Pros

  • Free and open source
  • Support for all standard UML diagrams
  • Plugin architecture for extensibility
  • Available on multiple platforms

Cons

  • Limited native support for version control systems
  • Less features than some commercial tools
  • Steep learning curve

Pricing Comparison

KompoZer
KompoZer
  • Free
StarUML
StarUML
  • Open Source

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Learn More About Each Product

KompoZer
KompoZer
Reviews, pricing & alternatives →
StarUML
StarUML
Reviews, pricing & alternatives →

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