Yes, both Halo Service Desk and Vertask offer a Free Trial.
Halo Service Desk is designed for Large Enterprises, Medium Business and Small Business.
Vertask is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Halo Service Desk Starts at $40/User/Month whereas for Vertask Starts at $5/Month.
Some top alternatives to Halo Service Desk includes Freshservice, ManageEngine ServiceDesk Plus, Jira Service Desk, Symantec ServiceDesk, InvGate Service Desk, HelpDesk, TOPdesk, ReadyDesk, UseDesk, Milldesk, Sitehelpdesk and BoldDesk.
Some top alternatives to Vertask includes Freshservice, ManageEngine ServiceDesk Plus, SolarWinds Service Desk, Jira Service Desk, Teamwork Desk, HelpDesk, osTicket, TOPdesk, ReadyDesk, HESK, BoldDesk and Richdesk.