Yes, both Scribd and Storiad offer a Free Trial.
Scribd is designed for Large Enterprises, Medium Business and Small Business.
Storiad is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Storiad begins at $35/Month, while pricing details for Scribd are unavailable.
Some top alternatives to Scribd includes Soundwise, Qualified, Audiorista, Issuu, Workvivo, Push to Kindle, Child Book, elocance, Podplayer, Storiad and IFTTT.
Some top alternatives to Storiad includes Sassbook, buzzbomb.com, SocialBook, Qualified, BetterBook, Workvivo, IndiePaper, Blog To Social, MediaKits, BookFunnel, MarketerMagic and IFTTT.