ArgoUML vs JetUML

ArgoUML is a free, open-source UML modeling tool for creating standard UML 1.4 diagrams. It supports all nine diagram types in that standard and follows the OMG UML 1.4 specification. The application is written entirely in Java and is intended to run on platforms with Java 5 or Java 6; the project offers installation through Java Web Start. Models use a JMI-based repository and XMI for saving: ArgoUML imports XMI 1.1 and 1.2 and writes XMI 1.2. Diagram output can be saved as GIF, PNG, PostScript, Encapsulated PostScript, PGML, or SVG. It can generate code for Java, C++, C#, PHP4, and PHP5, and its reverse-engineering framework supports Java source, JARs, and class files. Other capabilities include UML profiles, OCL constraint modeling with syntax and type checking, and background design critics that add suggestions to a to-do list. The interface is available in ten listed languages. ArgoUML is distributed under the Eclipse Public License 1.0 and runs on Windows, macOS, and Linux through a Java runtime.

JetUML is a free desktop editor for sketching software designs with UML. It supports class, sequence, state, object, and use case diagrams, keeping its feature set focused on core diagramming. Association edges are laid out automatically, and moving nodes changes their paths. A validity check reports diagram problems through temporary notifications. You can export diagrams as SVG, PNG, or JPEG images, or copy them to the system clipboard for use elsewhere. JetUML saves diagrams as JSON in a documented open format with a schema for each diagram type. It runs on Windows, macOS, and Linux. Distribution uses Java archives, including an operating-system-independent archive that requires Java and JavaFX; a community Nix package is available for macOS and Linux. The application is licensed under GNU GPL version 3 or later. JetUML states that it collects no information and accesses the network only to open Help-menu web pages. Larger diagrams can reduce performance.