eSpeak - eSpeak is a compact open source software speech synthesizer for English and other languages, for...
VoiceMaker - Voicemaker is a web application with which you can convert your texts into audio by simply importing the text onto the dedicated text box.
Balabolka - Balabolka is a Text-To-Speech (TTS) program.
Notevibes - Online Text to Speech Converter with 57 natural voices. Download your files as mp3 and Wav. For business and personal usage.
NaturalReader - Main Feature: Full Common Functions: Read Text Files o Text files o MS Word files
Free TTS - Free TTS is a web application that can convert any text into audio.