CHESS implements the CHESS UML/SysML profile, a specialization of the Modeling and Analysis of Real-Time and Embedded Systems (MARTE) profile
Constellation organizes and manages collaborative (distributed) World Wide Modeling projects,
Moka extensions provides a number of plugins that extend the functionality of Papyrus Moka engine for fUML simulation:
NeoEMF is a project that aims at handling large EMF models in an efficient and scalable way.
Papyrus extensions offer a number of plugins that extend the functionality of Papyrus UML for Aspect Oriented Modeling (AOM).