SingSong karaoke rates you on how well or badly you sing songs. SingSong Karaoke is actually a karaoke game and the closest thing to Singstar for Mac.
UltraStar Deluxe is a very well designed karaoke game for Mac. There are a few more recognized hits here and here which you can add to UltraStar Deluxe and you can find instructions how to install them here. The problem with UltraStar Deluxe for Mac is that the song catalog is very small. UltraStar Deluxe is similar to SingStar because it rates you on how well you sing tracks and allows up to 6 players at once. You can even search for and import any karaoke videos you find in YouTube into KaraokeTube. You can also filter songs by languages including English, French, German and Spanish. Many of the videos are just streamed from YouTube and KaraokeTube used to be filled with videos simply playing ads for films but the catalog has been considerably cleaned-up now so that only genuine karaoke videos are included. KaraokeTube includes hits by major artists such as ABBA, Adele, Green Day, The Beatles etc with new tracks being constantly being added by the developer although there are also many classic hits missing from the catalog. You can be up and singing karaoke in literally minutes with KaraokeTube and its easy enough for anyone to use.
