Downpour.com, Blackstone Audio’s online audiobook store, is a genuine competitor to Audible.com.And they have no DRM.
It offers audiobook downloads of titles, from Blackstone Audio’s extensive catalogue, and also those from many other audiobook publishers like Recorded Books, Harper Audio, Penguin Audio, Hachette Audio, and AudioGo.
Their subscription service is almost identically priced to Audible’s, each offers one credit per month for about $15. And, like an Audible credit Audible.com, a Downpour credit almost always gets you one audiobook.
Jesse at SFFaudio's been using Downpour and loving it. Read his review for more about DRM and Downpour.