Yes, both Saasu and Aero Workflow offer a Free Trial.
Saasu is designed for Individuals and Small Business.
Aero Workflow is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Aero Workflow begins at $39/Month when Billed Yearly, while pricing details for Saasu are unavailable.
Some top alternatives to Saasu includes Quickbooks, Xero, Freshbooks, Sage Accounting (Sage One), Liquid Accounts, Smarty Accounting, QuickFile, AccountsPortal, AccooWare and Sage Business Cloud Accounting.
Some top alternatives to Aero Workflow includes AccooWare, Scoro, Watchwork, StudioCloud, 7pace Timetracker, Qualified, Workvivo, AdvanceFlow, Traxit and Pascal Workflow.