UMLetino is a free online UML tool for fast UML diagrams. It runs in your browser, and does not require any installs.

It is based on UMLet (which is available as stand-alone tool or Eclipse plugin), and shares its fast, text-based way of drawing UML sketches.

Main features: install-free web app; save diagrams in browser storage; support for many UML diagram types; simple, markup-based UML element modifications; png export.

New in current version 15.1: Relation bug fix ++ log lib update ++ dark mode cleanup ++ ...