Other sites

 *This is gonna be updated if i see any other blog around.

Vocaloid stuff 

El rincòn del Kitsune - A classic site for all piracy people. this is the old site. 

El rincòn del Kitsune NEO - New blog for the site below, seems like they have two different teams tho.

O Canto Da Raposa - Vocaloid Beta VST crack. Thats all.

Vocaloidsource - A blog dedicated to Vocaloid piracy, tools, song albums, etc...

Nyaa.si Vocaloid tag - Torrent site. This link leads to the vocaloid tag.

Vocachive - An archive.org containing lots of archived voicebanks and softwares.

MikuDB - Download and view any recent Vocaloid album and songs.

UTAU and other synths stuff

UTAU lost media - An active blog made to rescue lost voicebanks of any synth excluding Vocaloid.

U-VOCA - A blog dedicated to Utau ports (Vocaloid to UTAU, etc).

Nyaa.si Utau tag - Torrent site. This link leads to the UTAU software and vbs tag.

StarFreeSynths - Mostly voiceroid content.

Pocaloiders Neo - Hatsune Miku NT crack + some UTAU/Vocaloid ports/vbs. 

Deepvocal Virtual Voice - Dedicated to post Deepvocal vbs.

Utau.us - Utau tutorials.

El Rincon del UtaUtaUtau - Resources for Utau, Vocaloid, NNSVS, SynthV, Oremo.

IDOLTRASH resources - Dedicated to Utau and NNSVS and Vocaloid tutorials.

MMD stuff

Nyaa.si MMD tag - Torrent site. This link leads to the MMD tag.

mmdmodelmania - Windows100% models along others.

mmd model giver - Many MMD models.

Vanilla-Cocoflake DA acc - A deviantart archive account with lots of rare/old models.

SPIRITS BLOG - Contains motions and models.

Misc

Audio wareZ - Softwares, VSTs, loops, sound libraries, presets, midis, sheets, etc...

UtaFormatix - This website lets you convert any project file into another. ex: ust to vsqx, etc

Vocalremover.org - This website lets you isolate vocals from instrumentals.

Basic Pitch - This Spotify powered website lets you make MIDIs from vocals.

Sekai viewer - Project sekai assets site. periodically updated.

Vocalova - Contains skins for android, themes, etc. and other fun stuff.