KaraDolphin
5.9#23 in karaoke softwareFree planFree planWindows
VisitKaraDolphin may suit Windows x64 users who want karaoke playback with synchronized lyrics, playlists, and support for multiple singers. It is not yet available for download according to its site.
KaraFun suits people looking for group karaoke, singing battles or music quizzes, with options for offline playback and remote song selection. Its Pro plan is intended for professional use, while Premium is limited to private use.