FreshBooks
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.
Pricing for Freshbooks Starts at $8/month when monthly whereas for Slemma Starts at $89/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 Slemma includes Alteryx, iDashboards, DataHero, Databox, DashThis, Klipfolio Dashboard, myDATA3, Easy Insight, AppInsights and Analytics Canvas.