Yes, both Trengo and Zoho Desk offer a Free Trial.
Trengo 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 Trengo are unavailable.
Some top alternatives to Trengo includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, ClickDesk, Front, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, Desky, eStreamDesk, Help Scout, UseDesk and LabiDesk.
Some top alternatives to Zoho Desk includes Zendesk Support, ManageEngine ServiceDesk Plus, Jira Service Desk, HelpDesk, SysAid, Desky, ReadyDesk, Sitehelpdesk, Trakdesk, HESK and BoldDesk.