Yes, both SherpaDesk and Vertask offer a Free Trial.
SherpaDesk is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Vertask is designed for Large Enterprises, Medium Business and Small Business.
Pricing for SherpaDesk Starts at $9per Tech whereas for Vertask Starts at $5/Month.
Some top alternatives to SherpaDesk includes Zoho Desk, Zendesk Support, ManageEngine ServiceDesk Plus, Time Track Bill, Billable, Apptivo, Freshservice, Vertask, Freshdesk, Teamwork Desk, LiveAgent, HelpDesk, SysAid, Jitbit Helpdesk, mHelpDesk and AtTrack.
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.