Speech Recognition HOWTO:
http://www.faqs.org/docs/Linux-HOWTO/Speech-Recognition-HOWTO.html
Dates from April 2002, should be updated.
Speech Recognition for Linux:
http://volker.dnsalias.net/linux/speechrec.html
Seems to be up to date as of 2005.
CVoiceControl – command and control for Linux:
http://www.kiecza.net/daniel/linux/
Up to date as of 2002.
Open Mind Speech: http://freespeech.sourceforge.net/
The project seems to have died at 2000.
The CMU Sphinx Group Open Source Speech Recognition Engines:
http://cmusphinx.sourceforge.net/html/cmusphinx.php
htk: http://htk.eng.cam.ac.uk/
simon: http://sourceforge.net/projects/speech2text/
Most recent news is from January 2008.
Julius: http://julius.sourceforge.jp/en_index.php
used by Simon, most recent software version was released at May 2008.
MARF: http://marf.sourceforge.net/
Seems to be active as of 2007.
Related Ubuntu project – VoxForge:
http://www.voxforge.org/
http://brainstorm.ubuntu.com/idea/4718/
The following are not speech recognition per se, but it may be good idea
to ensure that there are Debian packages for all FOSS tools mentioned in
the following:
Free speech analysis software:
http://www.personal.rdg.ac.uk/~llsroach/phon2/freespeech.htm
Not directly related to speech recognition,
Speech analysis software (Praat):
http://homepage.ntu.edu.tw/~karchung/Phonetics%20II%20page%
20twentythree.htm