Is there a good equivalent to UserVoice for internal helpdesks? (Or is UserVoice flexible enough to work well in an internal situation?) This kind of "pull up

Is there a good equivalent to UserVoice for internal helpdesks? (Or is UserVoice flexible enough to work well in an internal situation?) This kind of "pull up a FAQ while the user enters a ticket" tech could work incredibly well for fortune 500 companies, schools, universities, etc.