I created one that scans your files and creates a list of unique titles.
It is not necessary to sign in. You just point your own URL to the list.
It is in beta trial mode and I've been using it for a few months now.
It is updated on the fly (manually) so that if you grab a song for a singer, you can have it in your list before the singer sings it.
I designed it to work on iPads and mobile devices. It is search as you type and browse alphabetically at 200 per "page". Find your song, tap on the title and a pop-up displays for you to show the karaoke host your request.
http://ebookk.proContact me for a trial key if interested.
*I am considering adding an import feature for .csv files for hosts whose files are not named in the standard formats.