Mod4j (Modeling for java) is an open source project that defines a flexible modeling environment seamlessly integrated with Eclipse. It uses many parts from the Eclipse Modeling Project (EMF, Ecore, Xtext, Checks, Xtend, Xpand, MWE, ...) to provide the developer a modeling experience that closely resembles how he works with code. The part of Mod4j that focus on collaborative DSLs end DSL models is currently contributed to the Eclipse EMF Index project. More information on www.mod4j.org
Jos Warmer has a long time focus on software modeling and language angineering. He is project lead of the Mod4j open source project (www.mod4j.org), which uses the Eclipse Modeling project extensively to provide a flexxible and scaleable modeling environment for Java developers. Jos has been involved in authoring the UML standard, with an emphasis on OCL. He publishes books and papers and presents on a regular basis about various subjects concerning Model Driven Dwevelopment.