As somebody who has been familliar with UTAU for about 5 years, (has it really been that long???) I’ve always had a bit of an issue with the fact that UTAU is closed source. Sure, it’s great that the software is “free as in beer,” so to speak, but I lament how the community cannot make any improvements of their own to the core program, such as making the program Unicode so that more orthographic systems are supported, or allowing “reverse configuration” for VC samples.
As a point then, I decided to conduct a search for open-source singing synth technologies so see what I could find, since it’s been a few years since I’ve last looked and I wondered what the community has done since then.
There’s Rocaloid, but that doesn’t seem to be ready for prime time, as the old code has been deprecated and the creators are working on a new version.
However, another program that looks promising is QTau, an open-source singing synth that is meant to act as a substitute for UTAU. I haven’t tried it yet, however it indeed looks somewhat promising. It probably won’t replace UTAU for an average user anytime soon given the fact that it is currently GNU/Linux only, but the point of this is I have a new toy to play with. Muahaha. Updates forthcoming, if I get a chance to hack around with it.