Kobo Audiobooks - Experience the joy of being told a story
Angel's Vox - Angel’s Vox is the first audio player on the market designed specially for audiobook enthusiasts.
Scribd Audiobooks - Unlimited access to 30,000 audiobooks
BookDroid - BookDroid is an audio book listener for Android devices.
Prologue - Audiobook player on iOS for Audiobooks hosted on a Plex media server
Material Audiobook Player - Open Source Audiobook Player for Android