EMFPath is a Java framework based on Google Collections for browsing / editing EMF models. It has a concise and DSL-like API and has been designed with performance in mind.
There are no binary build yet, the API is still in Beta stage and then subject to change. It also lacks some documentations like a "Quick start", but everything is released so you can use it today.
You are welcome to provide feedback / comments / reviews / contributions ;)