Review of MaryTTS powered by the Slant community.
MaryTTS is an open-source, multilingual Text-to-Speech Synthesis platform written in Java.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Java library and there's a wide selection of voices and languages
The MaryTTS library is in Java and easy to use. Many voices to pick from and configure. Has many languages.
Cons
Con Still sounds like a robot
Still sounds like a robot, but better than the other two.