AH-Software Co. Ltd.

AH-Software or AHS Co., Ltd. officially, is an importer of digital audio workstation and encoders in Tokyo, Japan. It is also known as the developer of Voiceroid Tsukuyomi series.

About
AH-Software was established in 2005 as an importer and seller of music software in Tokyo, Japan. In Nov. 2009, they announced that they were going to distribute Vocaloid2 and Voiceroid products in Dec. 2009. AH-Software became the fifth developer of music voice synthesis software with this release.

Piapro
AH Software made the agreement with Piapro and users are able to post AHS's Vocaloids and creations onto the site. (No Voiceroids)