I have eclipse Kepler as IDE and I have installed svn plugin a long ago it could be either subclipse or subversion. I can't remember which one I installed. Is there a way easy to verify which plugin is installed?
Open the Help > About Eclipse dialog (Eclipse > About Eclipse on Macs).
Click the Installation Details button.
The Installed Software tab will contain several entries for Subversive if that is what you have installed (and something different for Subclipse - I'm not sure what).