Yes, both Kayako and Zoho Desk offer a Free Trial.
Kayako is designed for Large Enterprises, Medium Business and Small Business.
Zoho Desk is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Zoho Desk begins at $14/User/Month when Billed Yearly, while pricing details for Kayako are unavailable.
Some top alternatives to Kayako includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, Deskero, Teamwork Desk, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, CRMdesk, Sitehelpdesk, LabiDesk, HESK and BoldDesk.
Some top alternatives to Zoho Desk includes Zendesk Support, ManageEngine ServiceDesk Plus, Jira Service Desk, HelpDesk, SysAid, Desky, ReadyDesk, Sitehelpdesk, Trakdesk, HESK and BoldDesk.