Home Videos What is UML? Diagramming in the Unified Modeling Language What is UML? Diagramming in the Unified Modeling Language Jan 14, 2021 comments off Tweet on Twitter Share on Facebook Google+ Pinterest Learn how to read and when to use UML diagrams with this quick overview. Want to make your own UML diagram? Get started with a free trial of Gliffy by signing up on gliffy.com.