EMF Diff/Merge is a diff/merge tool for models. Its main purpose is to help build higher-level tools that need to merge models based on consistency rules. GUI components are also provided. Typical usages include model refactoring, iterative model transformations, bridges between models or modeling tools, collaborative modeling environments, or versioning systems.
This is the Kepler release of EMF Diff/Merge. It is intended to be the "operationally validated reference implementation" before significant enhancements are being developed.