Yes, both Zoho Flow and Unifize offer a Free Trial.
Zoho Flow is designed for Large Enterprises, Medium Business and Small Business.
Unifize is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Zoho Flow Starts at $10/Month when Billed Yearly whereas for Unifize Starts at $40/User/Month.
Some top alternatives to Zoho Flow includes Zoho One, Zapier, Nintex, Integrify, ProcessMaker, IBM Business Automation Workflow, BPMapp by 500apps, ZapUp by 500apps, Built.io Flow and Cflow.
Some top alternatives to Unifize includes Flowist, CollaborateCloud, Genialcloud Facsys, Breakout, Qualified, Workvivo, Flowall, Pascal Workflow, Dashpivot, IFTTT and Consider.