ArgoUML is a powerful Java-based tool designed for creating UML models that adhere to the 1.4 version standards. With ArgoUML, you can craft nine different types of diagrams: class, state, activity, use case, interaction, deployment, and sequence diagrams. This versatile application supports various file formats, including GIF, PNG, PostScript, encapsulated PS, PGML, and SVG, ensuring your diagrams are easily shareable and viewable. Key features of ArgoUML include compatibility with the XMI standard, allowing seamless integration with other UML tools. It also supports OCL and offers code generation for multiple languages such as Java, C++, C, PHP4, and PHP5. Additionally, ArgoUML boasts a modular framework for reverse engineering and provides design critiques to enhance your models. Ideal for developers and designers, ArgoUML streamlines the creation and management of UML diagrams, making it an essential tool for software development projects.

Argouml has some cool features, but I felt a bit overwhelmed at first. It's good for simple diagrams, but more complex ones were challenging. Still worth a try!