As of today (August 31, 2011), there are 52 Vocaloids including Released, Confirmed, and Upcoming Vocaloids.
V1:
LEON
LOLA - Zero-G
MIRIAM- Zero-G
MEIKO - CFM
KAITO - CFM
V2:
Sweet Ann - PowerFX
Hatsune Miku - CFM
Kagamine Rin (ACT 1) - CFM
Kagamine Len (ACT 1) - CFM
Prima - Zero-G
Kagamine Rin (ACT 2) - CFM
Kagamine Len (ACT 2) - CFM
Gackpoid: Kamui Gakupo - internet Co., Ltd.
Megurine Luka - CFM
Megpoid: GUMI - Internet Co., Ltd.
SONIKA - Zero-G
SF-A2 MIKI - AH Software
Kaai Yuki - AH Software
Hiyama Kiyoteru - AH Software
Big Al - PowerFX
Hatsune Miku Append - CFM
TONIO - Zero-G
LILY - Yamaha Corporation + Avex Management + Internet Co., Ltd.
VY1 (Codenamed: "MIZKI") - Yamaha Corporation + Bplats
Gachapoid: Ryuuto - Internet Co., Ltd.
Nekomura Iroha - AH Software
Utatane Piko - Sony Music Entertainment Japan + Ki/oon Records Inc.
Kagamine Rin Append - CFM
Kagamine Len Append - CFM
VY2 (Codenamed: "YUMA") - Yamaha Corporation + Bplats
Megpoid: GUMI Extend - Internet Co., Ltd.
V3:
Untitled - PowerFX
VFS-01R Ring Suzune - Yamaha Corporation
VFS-01L Lui Hibiki - Yamaha Corporation
SeeU - SBS Artech
Untitled - Zero-G
Untitled - Zero-G
I-Stlye Project; Aoki Lapis - Surfer's Paradise + Studio Deen + Nico Nico Douga user Base
Akikoroid-Chan - Unknown
Untitled - N/A (Spanish Male Vocaloid)
Untitled - N/A (Spanish Female Vocaloid)
Cul 2.0 / CUL-REBiRTH - Internet Co., Ltd.
MEW - Yamaha Corporation
Untitled - 1st Place
Upcoming Products:
KAITO Append - CFM
MEIKO Append - CFM
Megurine Luka Append - CFM
CV04 - CFM
Hatsune Miku (English) - CFM
VY? - Bplats
VY? - Bplats
Untitled - AH Software
Currently out of all the released Vocaloids, iLove Iroha ! ;DD
Anyway, there you go ! There have been word that there may be more upcoming products if the fandom requests for certain types of requests (ex. Zero-G may update current released Vocaloids if fandom requests it, etc.).
NOTE: Kagamine Rin & Kagamine Len count individually as ONE VOCALOID; including ACT 1, ACT 2, and Append.
Hope this answered your question ;)
This is the only answers i know ^_^
Hatsune Miku
Rin Kagamine
Len Kagamine
Luka Megurine
Meiko
Kaito
Akita Neru
Kasane Teto
Yowane Haku
While these are certainly all characters used in Vocaloid videos and such, there are several more and Neru and Haku are fanmade, while Teto is a popular UTAU.
There are many, but some of the most popular are:
Meiko Sakine
Kaito Shion
Miku Hatsune
Rin Kagamine
Len Kagamine
Luka Megurine
Gumi Megpoid
Gakupo Kamui
Lily
SeeU
SF-A2 Miki
Piko
Oliver
IA
VY2 Yumma
VY1 Mitzki
Neru
Haku
SeeU
Leon
Miriam
Lola
Iroha
Kaai Yuki
Kiyoteru
Tonio
Galaco
CUL
And Teto, Ritsu, Tei and more are UTAUs
The original VOCALOIDs from VOCALOID 1 do NOT have numbers on their shoulders. The first VOCALOID in VOCALOID 2 does NOT have numbers on her shoulders. Instead, she has stiches in some parts of her body. The only VOCALOIDs with numbers are the ones from the CV series. Miku is the first one from the CV series. When the number on her shoulder says 01, that doesent mean she is the first VOCALOID or the first Crypton VOCALOID or the first VOCALOID in the VOCALOID 2 Engine. The number "CV01" means Crypton VOCALOID Number 1. Kagamine Rin/Len are the second from the CV series "CV02" and the third CV series is Megurine Luka with "CV03". The "CV04" is currently in develpment.
V1 LOLA
V1 MIRIAM
V1 MEIKO
V2 Sweet ANN
V2 Hatsune Miku
V2 Kagamine Rin
V2 Prima
V2 Kagamine Rin ACT2
V2 Megurine Luka
V2 Megpoid
V2 SONiKA
V2 SF-A2 miki
V2 Kaai Yuki
V2 Lily
V2 VY1
V2 Nekomura Iroha
V2 Taiwan ANN
V2 Prima
V2 Taiwan SONiKA
V3 Mew
V3 SeeU
V3 Tone Rion
V3 CUL
V3 Yuzaki Yukari
V3 Clara
V3 IA
V3 Aoki Lapis
V3 Luo Tiyanyi
V3 galaco
V3 MAYU
V3 AVANNA
V3 Yan He
V3 Tohoku Zunko
V3 galaco ACT2
V3 Merli
V3 MAIKA
V3 Anri Rune
V3 Macne Nana
V3 ONA
V3 Ring Suzune
V3 AKIKOROID-chan (private VOCALOID)
Masaoka Azuki
Kobayashi Matcha
Total: 46
Akita Neru ain't a Vocaloid from the start.
I'm sorry, but no, once a VOCALOID serial number is used on one computer, it is no longer able to be used again. The VOCALOID serial number is a one and only thing. If it is used by another computer, then it will give out an error. If you purchase a VOCALOID you will not have this problem. So if you want a VOCALOID, you'll have to buy it.
Not yet.
on thiefy.com buy vocaloid and don't steal
You have to buy it to have an activation number.
Yes, Ai is a vocaloid. A vocaloid 3 to be exact.
Miku Miku Dance software and Vocaloid products are not dependent on each other in any way. You do not need one to use the other.
MMD, or MikuMikuDance, is not the same thing as VOCALOID, as some people may think. It is a program in which the user can take VOCALOID characters and make movies using frame-by-frame motion. You do this by moving their bones and joints, then setting it each frame.Hope this helps~
Vocaloid fans like Vocaloid. Vocaloid fans are located around the world. Vocaloid fans also have a tendency to like Japanese animation (anime) and comics (manga).
Piko is the name of both the Vocaloid and the voice provider, who is naturally not a Vocaloid.
No Teto is not a Vocaloid. I have heard before that She was made to be a prank. She is mistaken to be a Vocaloid. She sounds like a Vocaloid(y) software.
People are not sure if the second VOCALOID for the 1st generation was LEON or LOLA. They were both released on the same day. For VOCALOID 2nd generation, Hatsune Miku was the second VOCALOID after Sweet ANN. Lastly the VOCALOID 3rd generation, VOCALOID SeeU is the 2nd after MEW.