Yes, both Vertask and Teamwork Desk offer a Free Trial.
Vertask is designed for Large Enterprises, Medium Business and Small Business.
Teamwork Desk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Vertask Starts at $5/Month whereas for Teamwork Desk Starts at $8.50/User/Month when Billed Yearly.
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.
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.