Yes, both Dropbox Business and Formstack Sign offer a Free Trial.
Dropbox Business is designed for Large Enterprises, Medium Business and Small Business.
Formstack Sign is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Dropbox Business Starts at $12.50/Month whereas for Formstack Sign Starts at $16/User/Month when Billed Yearly.
Some top alternatives to Dropbox Business includes CollaborateCloud, Google Workspace, Odrive, Sync.com, Google Drive, FileCloud, Box, Microsoft OneDrive for Business, Dropbox Professional and BluSync.
Some top alternatives to Formstack Sign includes PandaDoc, Signable, eversign, DocuSign, signNow, Docu Signer, Document eSign, MyDocSafe, E-Sign and eSign by SquidSoft.