Scribd - Unlimited books, audiobooks & comics. Unparalleled discovery. Any device. $8.99/month
Audible - Audible is the world’s largest provider of premium audiobooks and spoken word content.
FlippingBook - FlippingBook changes the way you present your documents
LibriVox - free public domain audiobooks
Joomag - Joomag is the all-in-one digital publishing platform empowering businesses large and small to create, distribute, track, and monetize their interactive content.
Mobilism.org - A home for book lovers, app enthusiasts, and much more.