Viavoice Mailing List Official Website  
   Archive of messages on the Viavoice mailinglist
   http://viavoice.sparklist.com/

IBM ViaVoice SDK for Linux  
   the ViaVoice Kit provide the necessary tools to develop applications that incorporate speech recognition using Linux
   http://www-4.ibm.com/software/speech/dev/sdk_linux.html

The MBROLA PROJECT  
   Multi-lingual text to speech synthesis. Free software download for research purposes.
   http://tcts.fpms.ac.be/synthesis/

The Festival Speech Synthesis System  
   Festival is a general multi-lingual speech synthesis system developed at CSTR. It offers a full text to speech system with various APIs, as well an environment for development and research of speech synthesis techniques.
   http://www.cstr.ed.ac.uk/projects/festival/

FreeSpeech - Free Speech Recognition for Linux  
   Openmind (Freespeech) is a free speech recognition project for Linux It will be designed so that it can be easily integrated into any application or windowmanager as well as the kde and gnome desktop environments
   http://freespeech.sourceforge.net/