Yes, both Box and Adobe Sign offer a Free Trial.
Box is designed for Large Enterprises, Medium Business and Small Business.
Adobe Sign is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Box begins at $5/User/Month when Billed Yearly, while pricing details for Adobe Sign are unavailable.
Some top alternatives to Box includes CollaborateCloud, Microsoft SharePoint, Dropbox Business, FileCloud, ownCloud, Microsoft OneDrive for Business, Dropbox Professional, Citrix Content Collaboration, Genialcloud Facsys and Box Skills.
Some top alternatives to Adobe Sign includes PandaDoc, Signaturit, Signable, DocuSign, signNow, Docu Signer, Document eSign, E-Sign and eSign by SquidSoft.