Hatsune Miku
Hatsune Miku was the first Vocaloid developed by Crypton Future Media after they handled the release of the Yamaha vocal Meiko and Kaito. The name of "Hatsune Miku" was conceived soon after the Vocaloid 2 announcements, when an English and Japanese vocal were developed for the character. The intended design was delayed and later used for Megurine Luka instead. Miku was intended to be the first of a series of Vocaloids called the ""Character Vocal Series"", which included Kagamine Rin/Len and Megurine Luka. Each had a particular concept and vocal direction.
MikuMikuDance
The software was released as freeware. The models of the Vocaloid mascot series provided with the software are subject to the PiaPro Character License, and are not allowed to be used without permission for commercial reasons. Although the software is distributed freely, models released independently of the software may not be — original produced models, motion data, and landscapes may be subject to their creator's own rules. The program does not standardly include all of the Vocaloid characters, but it includes Hatsune Miku, Kagamine Rin, Kagamine Len, Kaito, Meiko, and Megurine Luka; and although Yowane Haku and Akita Neru are not official Vocaloids, they became so popular that Crypton officially licensed and added them to .