EMF Views is an Eclipse plugin that brings the concept of database views to the modeling world
JTL is an EMF-based tool that allows you to design and manipulate models, maintain consistency and synchronize software artifacts, keep traceability during design.
Model-based Monitoring from Åbo Akademi (MBMÅA) tool
Model-based Performance Testing (MBPeT) tool
Constellation organizes and manages collaborative (distributed) World Wide Modeling projects,