KaraFun might be a bit more popular than UltraStar Deluxe. We know about 2 links to it since March 2021 and only 2 links to UltraStar Deluxe. We are tracking product recommendations and mentions on Reddit, HackerNews and some other platforms. They can help you identify which product is more popular and what people think of it.
Https://usdx.eu/ - works, rather old, abandoned. - Source: Reddit / 5 months ago
Well, you have https://www.karaoke-forever.com/, which you could probably host and get setup or, if it's not as important for you to have it self-hosted to access everywhere but just "self-hosted" on a local machine, you have https://usdx.eu/, which I believe is the closest to what you will find of Singstar. - Source: Reddit / 5 months ago
I recommend using karafun.com for streaming karaoke. The app can run on many devices including TV, PC, tablets, phones. The app is free to try so I'd check to see if it will run on your Samsung. If it doesn't then you'll need to find a device to run Karafun and connect it to the Samsung via HDMI or use Chromecast. - Source: Reddit / 14 days ago
Try searching YouTube for "Ave Maria Karaoke" and also try visiting karafun.com - simply click on the 'catalog' tab and search for "Ave Maria" and ignore the options to log-in, subscribe or pay $$ unless you are specifically interested in what they offer. - Source: Reddit / 3 months ago
vanBasco's Karaoke Player - vanBascos Karaoke Player plays MIDI Karaoke files. Lyrics can be displayed in full-screen.
Karaoke 5 - karaoke 5 software - Excellent Player and Creator of file Karaoke. Karaoke. Professional karaoke program. Free karaoke program.
Performous - Performous is a Music and Dancing Simulation released by Loud Arts.
Soundfont Midi Player - Full-featured MIDI and Karaoke player/router with built-in MIDI synth
Vocaluxe - Vocaluxe is a free and open source singing game, inspired by Ultrastar (Deluxe) project. It allows up to six players to sing along with music using microphones in order to score points, depending on the pitch of the voice and the rhythm of singing.
PCDJ Karaoki - PCDJ KARAOKI is karaoke show hosting software designed for professional KJs.