Yes, both Kayako and BoldDesk offer a Free Trial.
Kayako is designed for Large Enterprises, Medium Business and Small Business.
BoldDesk is designed for Large Enterprises, Medium Business and Small Business.
The starting price of BoldDesk begins at $8/User/Month when Billed Yearly, while pricing details for Kayako are unavailable.
Some top alternatives to Kayako includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, ManageEngine ServiceDesk Plus, Freshdesk, Deskero, Teamwork Desk, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, CRMdesk, Sitehelpdesk, LabiDesk, HESK and BoldDesk.
Some top alternatives to BoldDesk includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Freshdesk, Deskero, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, Desky, eStreamDesk, EngageBay Helpdesk System, ReadyDesk, LabiDesk and AzureDesk.