Auditory supports aide many users with essential feedback during computer use, such as people with vision or auditory processing challenges. This list is still in development. So many apps now exist and screen reading resources are quite plentiful among tablet and computer operating systems.

Screen Reader software:
AI Squared Inc.: http://www.aisquared.com/Products/zoomtextmrd/index.cfm
Thunder: http://rjcooper.com/thunder-rj/index.html

Voice-over
Headsets: http://www.sforh.com/blindness/telepheadset-screenread.html

Speech Synthesizers:
This is hardware designed to recite and describe digital text, documents or computer operating system events in an artificial voice.
DECtalk Express by Digital Equipment Corp.: http://www.artictech.com/dtx.htm
DoubleTalk by RC Systems, Inc.: http://www.rcsys.com/dt.htm
(This list is still under construction)