Yes, both Zendesk Support and Jitbit Helpdesk offer a Free Trial.
Zendesk Support is designed for Large Enterprises, Medium Business and Small Business.
Jitbit Helpdesk is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Zendesk Support Starts at $19/user/month when yearly whereas for Jitbit Helpdesk Starts at $24.92/Month when Billed Yearly.
Some top alternatives to Zendesk Support includes Zoho Desk, ManageEngine ServiceDesk Plus, Deskero, Support Hub, HelpDesk, Desky, Help Scout, Salesforce Service Cloud, ReadyDesk, Sitehelpdesk, HESK and BoldDesk.
Some top alternatives to Jitbit Helpdesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Apptivo, Teamwork Desk, HelpDesk, SysAid, ReadyDesk, AzureDesk, Help Desk Premier, BoldDesk and Scopedesk.