Yes, both PaperNIC and Addmin offer a Free Trial.
PaperNIC is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Addmin is designed for Freelancers and Small Business.
Pricing for PaperNIC Starts at $19/Month whereas for Addmin Starts at $4.90/Month when Billed Yearly.
Some top alternatives to PaperNIC includes DocuPhase, LogicalDOC, M-Files, Content Central, CDOC, CannyDocs and Addmin.
Some top alternatives to Addmin includes M-Files, PaperSave, Docsvault, Content Central, docEdge DMS, Docsmore and DocuWork.