Google Play Books
Google LLC
Box
Amazon Kindle
Amazon Mobile LLC
Audible
Audible, Inc
Epic: Kids' Books & Reading
Epic! Creations Inc
Libby, by OverDrive
OverDrive, Inc.
ThriftBooks: New & Used Books
Thrift Books Global, LLC.
Bookshelf
Vital Source Technologies
Barnes & Noble NOOK
Barnes & Noble
Goodreads
