Best WhiteStarUML Alternatives & Competitors in 2025

StarUML.

Key StarUML features:

User-Friendly Interface Cross-Platform Support Extensibility Wide Range of Diagram Types

Online diagramming application.

Key draw.io features:

Free User-Friendly Interface Collaboration Integrations

Open Source

LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.

Key LucidChart features:

User-Friendly Interface Collaboration Features Integration Capabilities Template Library

UMLGraph is a professional automated drawing tool that allows the designers the declarative specification and drawing of UML class and sequence diagram.

Key UMLGraph features:

Automated Diagrams Integration with Javadoc Text-Based Configuration Extensible and Customizable

Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license.

Key Dia features:

Open Source Cross-Platform Versatile Diagram Types Customizable Toolset

Umbrello UML Modeller is a Unified Modelling Language diagram programme for KDE.

Key Umbrello features:

Open Source UML Support Integration with KDE Cross-Platform

UMLet - Free UML Tool for Fast UML Diagrams.

Key UMLet features:

Simplicity Open Source Quick Diagramming Lightweight

Eclipse Papyrus is an industrial-grade open source Model-Based Engineering tool. Eclipse Papyrus has notably been used successfuly in industrial projects and is the base platform for several industrial modeling tools.

Key Eclipse Papyrus features:

Open Source UML Support Integration with Eclipse Customizable Profiles

yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.

Key yEd features:

User-Friendly Interface Versatile Diagram Types Automatic Layouts Cross-Platform

OmniGraffle is for creating precise graphics like website wireframes, an electrical system designs, or mapping out software class.

Key OmniGraffle features:

User-friendly Interface Advanced Diagram Tools Cross-Platform Support Integration Capabilities

Visualize, design, innovate. The ultimate diagramming and modeling suite for UML, ERD, BPMN, flowcharting and data architecture. Elevate your ideas to new heights.

Key Software Ideas Modeler features:

User-Friendly Interface Free Trial Templates Search and Filtering

freemium €59.0 / One-off (Standard Edition)

ArgoUML, free and safe download. ArgoUML latest version: Open-source diagramming application for personal computers. ArgoUML is a program that allows users to create complex and professional diagrams.

Key CollabNet features:

Comprehensive ALM Suite Scalability Collaboration Features Support for Multiple Version Control Systems

PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.

Key PlantUML features:

Simple Syntax Quick Diagram Creation Version Control Friendly Integrations

Open Source