Uber
Yes, both InstantKB and Zendesk Support offer a Free Trial.
InstantKB is designed for Large Enterprises, Medium Business and Small Business.
Zendesk Support is designed for Large Enterprises, Medium Business and Small Business.
Pricing for InstantKB Starts at $39/Month whereas for Zendesk Support Starts at $19/user/month when yearly.
Some top alternatives to InstantKB includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Freshdesk, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, Helprace, Sitehelpdesk, Trakdesk, LabiDesk, AzureDesk, Help Desk Premier and BoldDesk.
Some top alternatives to Zendesk Support includes Zoho Desk, Tidio Helpdesk, Deskero, Support Hub, HelpDesk, Desky, Help Scout, Salesforce Service Cloud, ReadyDesk, Sitehelpdesk, HESK and BoldDesk.