UML and OCL Archive
Leon Starr's tips on open source model driven software development, Executable UML and a better action language.
Check the new models and OCL expressions added to the public OCL repository in GitHub
An open source implementation of the OMG Foundational Semantics for Executable UML models (fUML) specification available on GitHub
Did you know you can write textual UML models with Emacs (and generate the corresponding diagrams automatically)? Check this Emacs mode for sequence diagrams
Easy way to browse and visualize the UML notation specification
Read the latest proposals to improve the Object Constraint Language presented at the OCL workshop 2014
xtUML is a new open source solution for executable UML based on the well-known BridgePoint tool. Beyond a model editor, it includes several model compilers
Maybe developers do not (all) use UML but it looks like screenwriters do. Check the video!
Read what Grady Booch (creator of the UML) has to say about modeling, MDD and software development in general