Yes, both Zoho Desk and Help Scout offer a Free Trial.
Zoho Desk is designed for Large Enterprises, Medium Business and Small Business.
Help Scout is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Zoho Desk Starts at $7/user/month when yearly whereas for Help Scout Starts at $20/User/Month when Billed Yearly.
Some top alternatives to Zoho Desk includes Zendesk Support, Tidio Helpdesk, ManageEngine ServiceDesk Plus, Jira Service Desk, HelpDesk, SysAid, Desky, ReadyDesk, Sitehelpdesk, Trakdesk, HESK and BoldDesk.
Some top alternatives to Help Scout includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Freshdesk, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, Desky, eStreamDesk, CRMdesk, ReadyDesk, Trakdesk, LabiDesk and HESK.