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UMLet vs Visual Paradigm: catalog facts
UMLet	Visual Paradigm
Free Free and open source; donations are accepted through GitHub Sponsors, Patreon and PayPal.	Freemium Paid editions with a free trial; some tools such as the VPasCode online editor are free.
Windows, macOS, Linux, Web	macOS, Web
Sequence and activity diagrams can be created from plain text Exports to EPS, PDF, JPG, SVG and the clipboard	Covers UML, SysML, BPMN and enterprise architecture in one tool Desktop and browser versions
Focused on drawing diagrams rather than full model-driven design Plain interface may feel basic next to commercial modelling tools	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-or-later	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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