Right now, GenMyModel.com supports UML Class Diagrams and UML Use Case Diagrams (partially). Here are examples of diagrams that I generated with it:
Order Class Diagram with State Design Pattern:
Event Management Use Case Diagram:
Soon, I expect them to support other diagrams, such as my favorites, UML Sequence Diagrams and UML Collaboration (Communication) Diagrams.
Check GenMyModel.com out in the mean time and give them your feedback on how to make their app better.
Until next time.