OMG UML Resource Page
Object Management Group (OMG) provides the newest UML standards, add-ons and features on their site.
Free UML CASE tool and OO Resource Page
Links on Free Object Oriented Unified Modeling Language tools, links, and resources.
Objects by Design
Covers recent developments in object-oriented design and programming. Includes list of books, UML modeling tools, projects and forums.
The Precise UML Group
Publications, events, mailing list, links and organization; working on the evolution and standardization of the Unified Modeling Language.
The UML Bibliography
Contains references to publications and links about the Unified Modeling Language.
UML Diagram Gallery
A collection of UML diagrams sample, resources, tips and tricks for applying UML in software development projects.
UML Resource Center
The Unified Modeling Language industry-standard for specifying, visualizing, constructing, and documenting the artifacts of software systems. By Rational Software Corporation.
Use Case Maps
News, tools, publications and links. Includes information on the UCM User Group.