AquesTone

AquesTone is a free vocal synthesis software developed by Aquest, who also developed AquesTalk, Defoko UTAU's voice source.

Description
AquesTone is a VSTi plugin and can be used in audio editing programs such as FL Studio. AquesTone features a high quality voicebank, and has two voice options: Female, similar to Defoko and Male.

Reception
In western fandom is not well known. In Japan, it is more popular but has a few songs in relation to any Vocaloid.