ShareDocView offers Free Trial, but Backdrop does not.
Backdrop is designed for Large Enterprises, Medium Business and Small Business.
ShareDocView is designed for Individuals, Medium Business and Small Business.
Pricing for Backdrop Starts at $75/User/Month whereas for ShareDocView Starts at $3/Month when Billed Yearly.
Some top alternatives to Backdrop includes WeTransfer, DocSend, Kentico CMS, docMgt, OpenKM Document Management, ViewCenter, EpicPxls, Clientshare, TerminusCMS, Crafter CMS and ShareDocView.
Some top alternatives to ShareDocView includes DocSend, Enablix, Showell, Bobson, LiveDocs, Docsmore, SalesHood, SalesReach and BetterDocs.