Screenreaders

Product	OS	Notes
FireVox	Firefox addon
JAWS	Windows	No demonstration version available for testing, but the most widely used screen reader.
nVDA	Windows	Open source.
Orca	Linux/GNOME
SA to go	Windows	Free service.
supernova	Windows
VoiceOver	Mac OSX
Window-Eyes	Windows	30-minute timed demonstration available for testing.

Speech-recognition

Product	OS	Purpose
Firefox Accessibility Extension	Firefox addon	Although very useful for developers, this is also useful for people using adaptive technology, and to give them greater control over what Firefox offers in terms of access keys, etc.
Mouseless Browsing	Firefox addon	Adds numbers next to all links to make them keyboard accessible.
Webvisum	Firefox addon	Makes Firefox more fully functioned for people using screen readers. Automated captcha solving, OCR character recognition of image-only text links so they can be read aloud, and the ability for end-users to label unlabel fields for later read aloud.
ZoomText	Windows	Blows up the text on the screen for people with limited vision.