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

MATERA2

Model-based Monitoring from Åbo Akademi (MBMÅA) tool
Model-based Performance Testing (MBPeT) tool

Modelio

The open source modeling environment.

Modelio Constellation

Constellation organizes and manages collaborative (distributed) World Wide Modeling projects,

RCRS

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