Yes, both Nulius and PandaDoc offer a Free Trial.
Nulius is designed for Medium Business and Small Business.
PandaDoc is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Nulius Starts at $17/Month whereas for PandaDoc Starts at $19/User/Month when Billed Yearly.
Some top alternatives to Nulius includes PandaDoc, Proposify, Better Proposals, Propoze, seProposals, Docspo, NiftyQuoter, ProposalPad, Fresh Proposals and Prospero.
Some top alternatives to PandaDoc includes Proposify, Qwilr, Proposable, seProposals, Docspo, Adobe Sign, DocuSign, HelloSign, QorusDocs and Conga Composer.