1)   2nd Speech Center 4.15.10.1202
Converts any text into spoken words or even MP3/WAV audio files. 2nd Speech Center is an award-winning text-to-speech player that lets you listen to documents, emails or web pages instead of reading on screen.

 2)   TTS Builder 5.5
TTSBuilder allows engineers to create their own Text To Speech Voice or Language using High Quality Festival Speech Synthesis Research. A complete step-by-step manual for such a creation is included in the retail version.

 3)   Text To Wave ActiveX Server DLL 2.0
Text To Wave ActiveX DLL allows programmers to convert any readable text to a spoken wave file or a mp3 file . Ouputs 80+ wave formats XML scripting, ASP Server-Side Scripting for high quality wave production for your web or telephony project.