う゛〜ん英語版 UTAU Wiki
ttp://utau.wikia.com/wiki/UTAUloids
用に編集した文だと、
UTAU, or Vocal Synthesizer Tool UTAU formally, is a fanmade vocal synthesis program developed by Ameya/Ayame.
Unlike the Vocaloid platform distributed commercially by Yamaha, it is a non-commercial shareware (yet the donation is not compulsory).
Another feature that differentiate UTAU from Vocaloid is UTAU platform only provides vocal synthesis function. In other words, users have to download a voicebank optionally except for the attached voicebank known as Defoko.
