Are there any "application's uninstaller" apps that i can use to uninstall applications i have installed in Yosemite?
App cleaners is good,
Most applications install stuff preferences/config files to:
%home folder%/Library/Application Support
%home folder%/Library/Caches
%hone folder%/Preferences.
To access, "Go" menu, and hold down OPTION. I use spotlight only ...
Better to think ahead before u need an app than to try and 'clean' afterwards, and leaving traces around