PC users may have been blessed with three singing girls (
Miku, Rin and Luka) for Crypton's Vocaloid2 software already. But what about Mac users? Well, aside from the obvious answer
"screw Mac users", there's finally something similar out there for Apple's platform. It's called Macne Nana, which is the name of both the application, and the character pictured below - voiced by Haruna Ikezawa (Yoshino Shimazu from
Maria-sama ga Miteru, Mao Mizusawa from
KimiKiss Pure Rouge etc.).

Macne Nana can be downloaded from
Act2, but while it's a lot cheaper than Vocaloid's voice packs, I should warn that it's not actually a stand-alone program. Instead, it's just a plugin for other Mac sound editing software, and so far only Garageband and Reason are supported.
You can read more about it on
Moemania, and some Macne Nana songs are starting to pop up on YouTube: such is this
"Mimi no Aru Robot no Uta", aka "The robot that has ears song". I've certainly heard better ones.