Karaoke Builder Studio vs Performous

Karaoke Builder Studio has no write-up on Specifiction yet; its figures are above.

Performous is free software combining karaoke, band games, and dancing on Windows, macOS, and Linux. Its modes include vocals, lead, rhythm and bass guitar, drums, and dancing, with multiplayer support. Scored singing shows pitch so players can adjust their performance; karaoke mode displays lyrics without notes or scoring. The project says pitch detection works with laptop or webcam microphones. Controllers are autodetected, and the game can use a keyboard, microphones, USB guitars and drums, and dance pads. Supported song formats include Frets on Fire, UltraStar, SingStar XML, and StepMania. Composer edits and converts notes for music games, offering pitch analysis, zoomable timing, note synthesis, and format import and export. Composer lists SingStar XML, UltraStar TXT, and Frets on Fire MIDI formats. Free karaoke song packages are available under different libre and restricted license terms. The site says its free-song page does not yet include band-game or dancing songs. Performous is licensed under GNU GPL version 2 or later, with documentation, Discord, and a GitHub feedback page.