Hi, I developed a Firefox screen reader plug-in. I just wantet to promote it here and get some useful feedback.
It is named Automatik Text Reader, has multiple voices, auto language switch, and is easy to use.
Most of the languages have smooth voices but a few are still raw, such as Russian and Italian. The English ones are among the best, BTW.
Let me hear back your feedback.
I also made a cool demo video: