UMLet is described as 'Open-source UML tool with a simple user interface: draw UML diagrams fast, export diagrams to eps, pdf, jpg, svg, and clipboard, share diagrams using Eclipse, and create new, custom UML elements' and is a Diagram Editor in the development category. There are more than 25 alternatives to UMLet for a variety of platforms, including Windows, Linux, Mac, Web-based and Android apps. The best UMLet alternative is yEd Graph Editor, which is free. Other great apps like UMLet are Lucidchart, Microsoft Visio, PlantUML and quiver diagram editor.
MockupTiger is a web based application that helps you to build fluid wireframes, mockups or prototypes for your next web application or desktop software.
A lightweight HTML5/javascript library for UML 2 diagramming.
Alpha software. This project is in progress. Many functionalities are ready to be used. Nevertheless, some features and developments will not be neccessarily available for download.
GenMyModel is an online modeling plateforme for UML, BPMN2, Database, Flowchart and more. It supports realtime collaboration, centralized model repository, versioning and full traceability.
the Chronos Web Modeller is a collaborative tool for the creation of UML models with reporting, code and document generator .
Integrated development environment that can help you define models for your applications in a streamlined manner and test the results.
The Model Development Tools (MDT) project focuses on big "M" modeling within the Modeling project. Its purpose is twofold:
Whether you are a Business Architect, System Architect, Developer, Analyst or Designer, Modeliosoft meets your needs through its high quality solutions for modeling, and report, architecture or code generation.
A simple way of describing graphs and include it easily in your web for free, blog, markdown page, github, and any location where remote images can be showed.
Merge Plan is a user friendly diagram application. It is fully compatible with most diagram file formats. It is a great value in comparison to other diagram applications. It is part of Merge Soft Office.
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