A Virtual Singer created for Mac Computers, since Vocaloid2 doesn't run on the Mac. The Seiyuu Ikezawa Haruna provided the voice samples for Sasayaki and Macne NANA. She is the alter-ego of Macne NANA Petit.
Macne voicebanks can be transferred to the UTAU program. But SaSa herself is not an UTAUloid.