The Unified Modeling Language™ – UML – is OMG’s most-used specification, and the way the world models not only application structure, behavior, and architecture, but also business process and data structure.
This page provides links to the current UML specification for free download, standard UML Profiles and related specifications, articles about UML, UML Resource Pages, UML Tutorials, OMG’s UML Professional Certification Program, lists of UML Tools and materials about Modeling Methodologies.