Macsome Audiobook Converter - Convert Audible Audiobook to MP3 / AAC at up to 300x faster speed and id3 tags kept.
OpenAudible - OpenAudible Project Page
Ondesoft Audiobook Converter for Mac - Ondesoft Audiobook Converter for Mac is the best Audiobook Converter to convert iTunes/ Audible DRM Audiobooks like M4B, M4A, AA, AAX to MP3 or AAC in 16X fast speed, the ID Tags, metadata and chapter information will be preserved in output MP3 or M…
DRmare Audio Converter - DRmare Audio Converter for Windows is a complete audio DRM removal tool designed to convert both protected audios, including Apple Music, Audible audiobooks, iTunes music, and common audios to MP3, WAC, FLAC, M4A, AAC, etc.
TunePat Any Audiobook Converter - TunePat Any Audiobook Converter is an excellent Audible audiobook downloader designed for downloading and converting audiobooks in AA & AAX format from Audible to M4A/M4B/MP3 format.
TunesKit iBook Copy for Mac - Easily remove DRM protection from Apple iBooks and copy DRM protected iBooks to DRM free ePub files.