Yes, both Vivantio and Teamwork Desk offer a Free Trial.
Vivantio is designed for Large Enterprises, Medium Business and Small Business.
Teamwork Desk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Vivantio Starts at $42/User/Month whereas for Teamwork Desk Starts at $8.50/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 Teamwork Desk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Freshservice, Freshdesk, Deskero, HelpDesk, SysAid, Jitbit Helpdesk, Desky, eStreamDesk, Helpspot, ReadyDesk, AzureDesk, HESK and Help Desk Premier.