Here is the list of the Utauloids whose creators quit supporting their voicebanks any longer and whose creators have become unreachable.
NOTE: DO NOT REDISTRIBUTE THE VOICEBANKS OF DECEASED UTAULOIDS IF YOU ARE ASKED TO DO. YOUR ACT GOES AGAINST THE AUTHOR'S WILL, ESPECIALLY IF THEY PROHIBIT REDISTRIBUTION.

Aline Enbukyoku

Miki Yukine

Renzi Soune

Melody Shion

Hibiki Naraune

Shisu Roku

Misa Haruna

Yuuma Takahiro