Yes, both Trengo and Freshservice offer a Free Trial.
Trengo is designed for Large Enterprises, Medium Business and Small Business.
Freshservice is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Freshservice begins at $19/User/Month when Billed Yearly, while pricing details for Trengo are unavailable.
Some top alternatives to Trengo includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, ManageEngine ServiceDesk Plus, Freshdesk, ClickDesk, Front, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, Desky, eStreamDesk, Help Scout, UseDesk and LabiDesk.
Some top alternatives to Freshservice includes Jira, SolarWinds Service Desk, Jira Service Desk, IBM Control Desk, Freshdesk, HelpDesk, TOPdesk, ReadyDesk, TechExcel ServiceWise and Scopedesk.