Model Xtractor – Online Class Diagram Editor
http://model-xtractor.com/

Model Xtractor allows you to: a) Create or customize class diagrams online; b) publish diagrams to your blog; c) Visualize diagrams with contextual documentation, d) Print diagrams from PDF; and e) Browse preloaded metadata. Features include: 1) You have ready to use preloaded metadata, for dozens of popular frameworks, APIs, components and libraries. From different platforms and programming languages (.NET, ActionScript, PHP, IDL, VBScript), databases (MySQL, SQL-Server, Oracle, Access), IDL. I’m working on getting Java, Ruby, Objective-C, XML and way more under the same roof; 2) You have hundreds of ready to use class diagrams, for so many areas of a product or library. Each diagram can be visualized with its contextual documentation or can be cloned and customized to answer your specific needs; 3) You have a generic and universal model, evolved from UML and ER, that offers more flexibility. And you can simply “navigate” though the result of each method or function with simple drag and drops of shape items. The model is object-oriented and supports most programming languages, data models and XML. It’s easy to move from a platform to another, because the model uses similar notation, concepts, conventions and techniques; and 4) Everything is online. No need to download, import, convert or install anything on your own computer. And everything is built with pure HTML and JavaScript on the client side. You can easily publish any unprotected diagram to your own blog or site! This has been added to the tools section of Research Resources Subject Tracer™ Information Blog.