Yes, both Freshbooks and Nusii offer a Free Trial.
Freshbooks is designed for Freelancers, Medium Business and Small Business.
Nusii is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Freshbooks Starts at $8/month when monthly whereas for Nusii Starts at $24.16/Month when Billed Yearly.
Some top alternatives to Freshbooks includes Quickbooks, Xero, Zoho Books, FreeAgent, QuickFile, HoneyBook, Zoho Invoice, Busy Accounting Software, QuickBooks Desktop Pro and Wave.
Some top alternatives to Nusii includes PandaDoc, Offorte, Proposify, Better Proposals, Proposable, Propoze, ProposalPad, Fresh Proposals, Prospero and Proposa.