Yes, both Vision Helpdesk and Kayako offer a Free Trial.
Vision Helpdesk is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Kayako is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Vision Helpdesk begins at $12/User/Month when Billed Yearly, while pricing details for Kayako are unavailable.
Some top alternatives to Vision Helpdesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, Kayako, Deskero, Teamwork Desk, LiveAgent, HelpDesk, SysAid, osTicket, Jitbit Helpdesk, eStreamDesk, BoldDesk and Scopedesk.
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.