Firefox and Seamonkey extension that gives you control over cross-site requests
RequestPolicy is a Firefox extension that gives you control over cross-site requests. It does this through user-defined white-lists and blacklists. Users can also subscribe to policies (white-lists and blacklists) maintained by others.
You can contact the maintainers of this package via email at
mozilla-requestpolicy dash maintainers at fedoraproject dot org.