Based on our record, UltraStar Deluxe seems to be more popular. It has been mentiond 2 times since March 2021. 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 / 3 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 / 4 months ago
Karaoke 5 - karaoke 5 software - Excellent Player and Creator of file Karaoke. Karaoke. Professional karaoke program. Free karaoke program.
KaraFun - KaraFun is the best online karaoke. Over 35,000 karaoke songs, with studio quality, at home or on the go. Regular updates. Free demo!
vanBasco's Karaoke Player - vanBascos Karaoke Player plays MIDI Karaoke files. Lyrics can be displayed in full-screen.
Soundfont Midi Player - Full-featured MIDI and Karaoke player/router with built-in MIDI synth
Performous - Performous is a Music and Dancing Simulation released by Loud Arts.
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.