Yes, both Zoho Desk and HelpDesk offer a Free Trial.
Zoho Desk is designed for Large Enterprises, Medium Business and Small Business.
HelpDesk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Zoho Desk Starts at $14/User/Month when Billed Yearly whereas for HelpDesk Starts at $29/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 HelpDesk includes Zendesk Support, Tidio Helpdesk, Freshservice, Freshdesk, Zoho Desk, SupportBee, Teamwork Desk, SysAid, Jitbit Helpdesk, Snappy, Helpspot, ReadyDesk, HelpdeskEddy, Help Desk Premier, Support.cc by 500apps and BoldDesk.