Hatsune Miku
, sometimes referred to as Miku Hatsune, is the name of a Vocaloid software voicebank developed by Crypton Future Media and its official moe anthropomorph, a 16-year-old girl with long, turquoise twintails. She uses Yamaha Corporation's Vocaloid 2, Vocaloid 3, and Vocaloid 4 singing synthesizing technologies. She also uses Crypton Future Media's Piapro Studio, a singing synthesizer VSTi Plugin. She was the second Vocaloid sold using the Vocaloid 2 engine and the first Japanese Vocaloid to use the Japanese version of the Vocaloid 2 engine. Her voice is modeled from Japanese voice actress Saki Fujita. Miku's personification has been marketed as a virtual idol and has performed at concerts onstage as an animated projection (rear cast projection on a specially coated glass screen).
Megpoid
By 2010, Gumi's popularity was on par with Crypton Future Media's Vocaloids and had out sold her predecessor Camui Gackpo, becoming the most popular and well known non-Crypton Vocaloid. In 2011, her usage grew and in a number of weeks she would have even more songs in the top 100 rankings than some of the Crypton Future Media vocalists. In January 2015, a popularity poll was released, confirming Gumi was the second most popular Vocaloid of 2015 on Niconico.