Yes, both Vivantio and HelpDesk offer a Free Trial.
Vivantio is designed for Large Enterprises, Medium Business and Small Business.
HelpDesk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Vivantio Starts at $42/User/Month whereas for HelpDesk Starts at $29/User/Month when Billed Yearly.
Some top alternatives to Vivantio includes Freshservice, ManageEngine ServiceDesk Plus, SolarWinds Service Desk, Jira Service Desk, Symantec ServiceDesk, InvGate Service Desk, IBM Control Desk, Teamwork Desk, HelpDesk, TOPdesk, Sitehelpdesk and Scopedesk.
Some top alternatives to HelpDesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, SupportBee, Teamwork Desk, SysAid, Jitbit Helpdesk, Snappy, Helpspot, ReadyDesk, HelpdeskEddy, Help Desk Premier, Support.cc by 500apps and BoldDesk.