VoiceOver gives you auditory descriptions of each onscreen element and provides helpful hints along the way — whether you prefer using gestures, a keyboard, or a braille display.
Screader is a screen reader based on the Screen package. It reads the Linux virtual console screen and puts it through to a speech synthesizer without disturbing the running process.
NVDA (NonVisual Desktop Access) is a free “screen reader” which allows blind and visually impaired people to access and interact with the Windows operating system and many third-party applications.
A Firefox extension that provides text-to-speech functionality using Microsoft Win32 Speech API (SAPI). With FoxyVoice users can do tuning of their browser and they can listen to the page being read or browse on one page and listen to another page being read for a higher degree of sensory overload.
A free screen review package that enables users to interact with applications and the GNU/Linux operating system with audible feedback from the console using a synthetic speech device.
Αn integral part of the GNOME Accessibility Project. It is a screen-reader and magnifier that allows viewers or viewers to effectively use the Gnome 2 desktop and Gnome / GTK + 2 applications.