CHESS implements the CHESS UML/SysML profile, a specialization of the Modeling and Analysis of Real-Time and Embedded Systems (MARTE) profile
Collaboro makes language development processes more participative: both developers and users of the language can collaborate together to create and evolve it.
Moka extensions provides a number of plugins that extend the functionality of Papyrus Moka engine for fUML simulation:
Papyrus extensions offer a number of plugins that extend the functionality of Papyrus UML for Aspect Oriented Modeling (AOM).
RCRS (the Refinement Calculus of Reactive Systems) is a compositional reasoning framework