Poseidon for UML was a desktop UML modeling and software design tool for developers, architects, and analysts. It supported UML diagramming, model management, and code engineering, but the product is discontinued and no longer receives updates.
💡 Pick it for the closest modern replacement with broader UML, requirements, and code-engineering features.
Visual Paradigm is a comprehensive modeling tool that supports UML, BPMN, and other standards. It offers features for software development, system design,...
Starting from $99 per user per year
💡 Choose it for enterprise traceability, systems engineering, and a perpetual license instead of Poseidon's discontinued workflow.
Enterprise Architect is a visual modeling and design tool that supports UML, BPMN, and other modeling standards. It is widely used for...
Starting from $229 per user
💡 Pick it for a lightweight, modern desktop UML tool with one-time pricing and cross-platform support.
StarUML is a sophisticated software modeler that supports agile and concise modeling. It is an open-source project with a user-friendly interface.
💡 Choose it for a free, extensible desktop UML environment with code-engineering support.
Modelio is an open-source modeling environment supporting UML, BPMN, and other modeling languages.
💡 Pick it for version-controlled UML diagrams that build automatically inside code and documentation workflows.
PlantUML is an open-source tool that allows users to create UML diagrams from plain text descriptions.
💡 Choose it for free, standards-based UML or SysML modeling with deep Eclipse extensibility.
Eclipse Papyrus is an industrial-grade open source Model-Based Engineering tool. It provides a domain-specific language for defining constraints. It supports UML, SysML,...
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