Yes, both Sign.net and PandaDoc offer a Free Trial.
Sign.net is designed for Individuals, Freelancers and Small Business.
PandaDoc is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Sign.net Starts at $29/Month whereas for PandaDoc Starts at $19/User/Month when Billed Yearly.
Some top alternatives to Sign.net includes PandaDoc, Signaturit, Secured Signing, USD GoSign, Document eSign, E-Sign, BoldSign, eSigns, SignBox and eSign by SquidSoft.
Some top alternatives to PandaDoc includes Proposify, Qwilr, Proposable, seProposals, Docspo, Adobe Sign, DocuSign, HelloSign, QorusDocs and Conga Composer.