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PlantUML vs Visual Paradigm: catalog facts
PlantUML	Visual Paradigm
Free Free and open source under the GPL.	Freemium Paid editions with a free trial; some tools such as the VPasCode online editor are free.
Windows, macOS, Linux, Web, Command line	macOS, Web
Covers far more diagram types than most text-based tools Integrations for nearly every editor, wiki and documentation system	Covers UML, SysML, BPMN and enterprise architecture in one tool Desktop and browser versions
Requires Java and, for some diagram types, Graphviz The syntax is inconsistent between diagram types	Broad feature set takes time to learn Full features require a paid edition
Downloadable app, Web application	Downloadable app, Web application
Open source	Closed source
License: GPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.