Best UML Products in 2025

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

Generate professional standard operating procedures in minutes. AI-powered SOP creation built on 10,000+ industry procedures.

Key WorkProcedures features:

SOP Generation SOP Library Handbooks Reading Room

Try for free freemium £79.99 / Monthly (50 SOPs, Export PDF/Word, Library, Handbooks)

Create diagrams and visualizations using text and code.

Key Mermaid features:

Ease of Use Integration Automated Diagrams Cost-effective

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

StarUML.

Key StarUML features:

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

Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.

Key Modelio features:

Open Source Wide Range of Modeling Standards Extensible Built-In Code Generation

JavaScript based diagramming tool that renders Markdown-inspired text definitions to create and modify sequence diagrams dynamically.

Key ZenUML features:

Ease of Use Real-time Collaboration Integration with Development Tools Live Rendering

From Idea to Execution - 10x Faster with AI Diagrams.

Key Creately features:

User-Friendly Interface Collaboration Features Template Library Integrations

freemium $5.0 / Monthly (Unlimited canvases and items)

BOUML : An UML toolbox running under Linux, MacOS X and Windows to specify and generate code in C++, Java, Php, Python, Idl and MySQL.

Key BOUML features:

Lightweight and Fast Cross-Platform Compatibility Extensible Free to Use

Online diagramming application.

Key draw.io features:

Free User-Friendly Interface Collaboration Integrations

Open Source

Diagramo is an online flowchart software - diagrams (create, edit and share).

Key Diagramo features:

Open Source Web-Based Collaboration Intuitive Interface

Looking for an affordable software with Enterprise Architecture tool, PMBOK tool, UML tool, Agile tool, BPMN tool and UX tool? Read this page for details.

Key Visual Paradigm features:

Comprehensive Diagramming Tools Team Collaboration Code Engineering Report Generation

UML Designer provides a set of common diagrams to work with UML 2.5 models.

Key UML Designer features:

Open Source Integration with Eclipse Comprehensive Features Community Support

MagicDraw | No Magic is one of the most respected providers of standards-compliant modeling, simulation and analysis solutions in the industry.

Key MagicDraw features:

Comprehensive Modeling Support Collaboration Features Integration and Compatibility Customization and Scripting