CHESS

CHESS implements the CHESS UML/SysML profile, a specialization of the Modeling and Analysis of Real-Time and Embedded Systems (MARTE) profile

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

The open source modeling environment.

PADRE

Performance-driven softwAre moDel Refactoring framEwork (PADRE) 

RCRS

RCRS (the Refinement Calculus of Reactive Systems) is a compositional reasoning framework