Reflective Ecore Model Diagram Editor is a GMF based Eclipse plugin which provides a graphical editor for any EMF model file, using only the meta-model such as .ecore and .xsd file. You don't need any .gmfgraph, .gmftool, .gmfmap, or .gmfgen files.
Eclipse Utility Plugin is a small eclipse based plugin that extends the capability of Eclipse IDE. Eclipse Utility Plugin includes two utility projects; Multi-File History plug-in(http://www.pragmatic.kr/pages/1989336) and Open External plug-in(http://www.pragmatic.kr/pages/2077012).