Yes, both ClearSlide and DocSend offer a Free Trial.
ClearSlide is designed for Large Enterprises, Medium Business and Small Business.
DocSend is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for ClearSlide Starts at $35/User/Month whereas for DocSend Starts at $10/User/Month when Billed Yearly.
Some top alternatives to ClearSlide includes iPresent, Prezentor, Showell, ZoomInfo Engage, Salesvue, StorySlab, SalesReach, ShoDeck, Zoomifier and slideZing.
Some top alternatives to DocSend includes Microsoft SharePoint, Enablix, Showell, PandaDoc, Dropbox Business, Dropbox Professional, DocuSign, signNow, Document eSign and MyDocSafe.