The National Library Service for the Blind and Print Disabled (NLS)--A division of the Library of Congress, NLS administers a free library program of braille and audio materials circulated to eligible borrowers in the United States by postage-free mail. Material may also be downloaded through NLS’ Braille and Audio Reading Download System (BARD)
Learning Ally--A non-profit providing instructional material in audio formats to students with disabilities that prevent them from reading standard print.
Bookshare--Bookshare collects the digital files of books provided by publishers. These digital files are converted from text to speech and provided to the readers who can download the content.
Accesstext Network--A partnership between major book publishers, the Accesstext Network allow colleges and universities to access digital files of material for students with disabilities.