Answer:
Teto Kasane is both somewhat a Vocaloid and a UTAUloid. Utau is like Vocaloid only thing is you can make your own voice into a UTAUloid and its free. But it is very hard to use. If you go on www.youtube.com or www.nicovideo.jp you will probably see alot of UTAUloids and fanmade ones. The big difference of Vocaloids and UTAUloids are UTAUloids sound not as good as Vocaloids. But both have MMD Models. She is a Vocaloid character, but she is also part of the UTAUloids.