Yes, both Zendesk Support and Vision Helpdesk offer a Free Trial.
Zendesk Support is designed for Large Enterprises, Medium Business and Small Business.
Vision 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 Vision Helpdesk Starts at $12/User/Month when Billed Yearly.
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.
Some top alternatives to Vision Helpdesk includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, Freshdesk, Kayako, Deskero, Teamwork Desk, LiveAgent, HelpDesk, SysAid, osTicket, Jitbit Helpdesk, eStreamDesk, BoldDesk and Scopedesk.