Yes, both Freshbooks and Slemma offer a Free Trial.
Freshbooks is designed for Freelancers, Medium Business and Small Business.
Slemma is designed for Medium Business and Small Business.
The starting price of Slemma begins at $89/Month when Billed Yearly, while pricing details for Freshbooks are unavailable.
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 Slemma includes Alteryx, iDashboards, DataHero, Databox, DashThis, Klipfolio Dashboard, myDATA3, Easy Insight, AppInsights and Analytics Canvas.