OpenAudible - OpenAudible Project Page
Audiobook Builder - Audiobook Builder is a software that enables users to turn their audio files into audiobooks which they can sue then on their iPhone, iPad, or any other Apple devices.
AudKit AAX Converter - Full-featured AudKit Audible AAX converter to download and convert Audible audiobooks to MP3, AAC, M4A, M4B, etc. losslessly.
Audiobook Converter - AudioBookConverter simple and lightweigh application to convert set of mp3 files to single m4b file to be played on i-device AudioBookConverter support conversion of most of popular formats to m4b, it also handle existing m4b files and process them.
TunesKit iBook Copy for Mac - Easily remove DRM protection from Apple iBooks and copy DRM protected iBooks to DRM free ePub files.
Free Audiobooks - Free Audiobooks is a digital audiobooks library app that comes up with an extensive collection of more than 14000 different audiobooks to help you in boosting up your knowledge right at your fingertips.