Speech recognition packages and applications are always in great interest for developers and physically disabled peoples but their are very few live projects on open source which can satisfy your needs.Most of the complete applications are propriety and marked under patents.If we talks about the Linux ,there are few binaries and packages which are currently used as speech recognition on many distros of Linux.These packages are incorporate with the other software’s to build the products in the open source.Do you know that it is also possible to use Windows speech recognition software under Linux but it is proprietary.These are the list of the 12 useful speech recognition applications available for Linux:speech-recognition

  1. FestivalFestival Speech Synthesis Systems is a free software multi-lingual speech synthesis workbench that runs on multiple-platforms offering black box text to speech, as well as an open architecture for research in speech synthesis. It designed as a component of large speech technology systems.festvox
  2. Xvoice –It enables continuous speech dictation and speech control of most X applications ,requires ViaVoice to function. xvoiceshot
  3. VoxForge – Its a free speech corpus and acoustic model repository for open source speech recognition engines.
  4. CVoiceControl KDE and X Window fencesitter of its predecessor version named  KVoiceControl
  5. Julius – Its a high-performance, two-pass large vocabulary continuous speech recognition (LVCSR) decoder software for speech-related researchers and developers
  6. HTKHidden Markov Model Toolkit is not a native open source application as it is copyrighted by Microsoft, though source code is available for personal use.
  7. CMU Sphinx –Its basically  is the general term to describe a group of speech recognition systems developed at Carnegie Mellon University.
  8. DynaSpeak is an open source application from SRI International (speaker-independent speech recognition software development kit that scales from small- to large-scale systems, for use in commercial, consumer, and military applications)
  9. Simon – Its basically open-source speech recognition program and replaces the mouse and keyboard.This project aims at helping blind people via speech commands.simon
  10. Open Mind Speech – The Open Mind Speech project is part of the Open Mind Initiative and aims to develop free (GPL) speech recognition tools and applications, as well as collect speech data from “e-citizens” using the Internet. oms
  11. GnomeVoiceControlGnome-Voice-Control is a dialogue system to control the GNOME Desktop.
  12. PerlBox – It basically an open source Voice Software For Linux and Unix Systems.perl

These few open source application packages may fits well if you are using it as an addons for another application or you are implementing any application for blind peoples.Besides these application if you find any other then feel free to comment below.Moreover, the installation process and other downloadable binaries are available on the respective mentioned website.