Also, from The FAQ:
> Who/what is behind this project? > > I've had a couple people and institutions provide a bit of help along the way, but I am — and always have been — one person.
Never underestimate the intellect of a single person. Every corporate team, every open source maintainer, every researcher more or less* has access to the same prior knowledge to build something new.
* some have more money to burn, some are surrounded by mentors/helpers
I actually think Microsoft's TTS is the best and has many voices. IBM's Watson branded voice was a close second. But as near as I can tell, there's no way to run these locally, only through their cloud interface.
I'd say this portaspeech one was the best local I've heard but it annoyingly trips on words like "shouldn't".