EMF Views
EMF Views is an Eclipse plugin that brings the concept of database views to the modeling world
JTL
JTL is an EMF-based tool that allows you to design and manipulate models, maintain consistency and synchronize software artifacts, keep traceability during design.
Modelio Constellation
Constellation organizes and manages collaborative (distributed) World Wide Modeling projects,
Moka Extension for logging
Moka extensions provides a number of plugins that extend the functionality of Papyrus Moka engine for fUML simulation:
PADRE
Performance-driven softwAre moDel Refactoring framEwork (PADRE)
Papyrus extension for AOM
Papyrus extensions offer a number of plugins that extend the functionality of Papyrus UML for Aspect Oriented Modeling (AOM).
RCRS
RCRS (the Refinement Calculus of Reactive Systems) is a compositional reasoning framework