LibriVox - free public domain audiobooks
Blinkist - Key insights from 6,000+ bestselling books and podcasts
OverDrive Media Console - Download eBooks and audiobooks from your library directly to your iPhone, iPad, and iPod Touch!
Instaread - Read or hear key takeaways of any book in minutes
Listen Audiobook Player - Feature rich and easy to use player for your audio books.
wits.io - Weekly book summaries recommended by founders and makers