Orca is a free, open source, flexible, and extensible screen reader
that provides access to the graphical desktop via user-customizable
combinations of speech, braille, and/or magnification. Under
development by the Sun Microsystems, Inc., Accessibility Program Office
since 2004, Orca has been created with early input from and continued
engagement with its end users. In fact, the user interface designer
for Orca is also a user.