Gespeaker great frontend for espeak

https://www.muflone.com/gespeaker/english/

Some reason rpm package is not available, but it can be made using Alien from deb-package.

https://pkgs.org/download/gespeaker

I made the gespeaker-0.8.6-2.noarch.rpm from Ubuntu´s package.

PS. You need to install espeak also.