TTS engine Realspeak available in many languages. Company (former Scansoft) bought many TTS-manufacturers, e.g. Rhetorical, ETI-Eloquence, Nuance, Lernhout and Hauspie.

Merger of TTS companies Babeltech, Elan and Infovox. Many TTS-engines with online demonstrations.

Elan Speech, dedicated global provider of text-to-speech (TTS) technologies for telecommunications, multimedia, embedded systems and mobile solutions. Provides 2 ranges of speech synthesis technologies for high quality and low footprint requirements. ...

TTS manufacturer from Italy, support for many languages, online demonstration available.

IBM Text-to-Speech (TTS) Research interactive demo, multi lingual, unconstrained.

Text-to-speech for a wide selection of platforms - including servers, desktops and mobile. Provides a variety of languages, voices, and accents. Effective on line demo of speech quality.

Features a line of speech synthesis products. Demos on the site.

A speech synthesis system written entirely in the Java(TM) programming language. Based upon Flite: a smallrun-time speech synthesis engine developed at Carnegie Mellon University and derived from the Festival Speech Synthesis System from the Universit...

Multi-lingual text to speech synthesis. Free multi platform software download for research purposes.

Free software tools and documentation for building new speech synthesis voices in English and other languages. Associated to Festival TTS. From Carnegie Mellon.