StarUML is described as 'Program to develop fast, flexible, extensible, featureful, and freely-available UML/MDA platform running on Win32 platform. The goal of the StarUML project is to build a software modeling tool and also platform that is a compelling replacement of commercial UML' and is a UML Modeling tool in the development category. There are more than 50 alternatives to StarUML for a variety of platforms, including Windows, Linux, Web-based, Mac and Android apps. The best StarUML alternative is yEd Graph Editor, which is free. Other great apps like StarUML are Lucidchart, Microsoft Visio, PlantUML and Mermaid.
TopCoder UML Tool is an easy to use, consistent modeling tool for use in Design and Development competitions. The new tool was built to model sequence, class, use case, and activity diagrams. On top of that, all those elements can have documentation easily attached to them.
the Chronos Web Modeller is a collaborative tool for the creation of UML models with reporting, code and document generator .
A simple JavaScript library to turn text into vector UML sequence diagrams. Heavily inspired by websequencediagrams.com, who offer a server-side solution. js-sequence-diagrams uses Jison to parse the text, and Snap.svg to draw the image.
ClassBuilder is freeware CASE tool targeted at the C++ developer, running on Win2K-XP. It lets you create, manipulate and navigate classes, class relations, class members and class methods at a high level of abstraction through a graphical user interface.
ckwnc is a uml sequence diagram creation tool that uses an intuitive c-style language to automatically create uml diagrams that can be saved as an image or embedded directly into other pages
While coding with AI assist, I noticed bigger projects need something more rigid as context so the AI coder doesn't stray away when I try to add new features. You know, to keeps its memory fresh and not change the stuff that already works.
Astah Professional is an all-in-one modeling tool for software design, supporting UML, ER, DFD, flowcharts, and more. It offers code generation, reverse engineering, collaboration features, and extensibility via plug-ins and scripts.
MockupTiger is a web based application that helps you to build fluid wireframes, mockups or prototypes for your next web application or desktop software.
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