EFactory, clone of https://code.google.com/a/eclipselabs.org/p/efactory/. More background e.g. on:

• first blog http://blog2.vorburger.ch/2013/06/efactory-ii-xobjects-ehutn.html (incl. the introductory screen cast http://www.youtube.com/watch?v=ToUWqIRHkHY)
• second blog http://blog2.vorburger.ch/2013/12/efactory-ii-eson-201311-update.html (and it's screencast at http://www.youtube.com/watch?v=fSq_zes4kv8)
• slides from the Modeling Symposium during EclipseCon Europe 2013 at https://docs.google.com/presentation/d/1pHLD9p1NSa6fuToCAZkk9GnCcriXco8RdmrwyoOxYds/

• Eclipse Help > Install New Software... Add... new Repository Location http://www.vorburger.ch/efactory-repository/

• get an Eclipse Dev IDE with PDE & modeling (Xtext)
• import all projects in this repository into Eclipse
• Window > Preferences > Plug-In Development > Target Platform: Switch to EFactory as active target definition (from com.googlecode.efactory.target/com.googlecode.efactory.target.target)

see https://travis-ci.org/vorburger/efactory