Yes, both Harvest and SolarWinds Service Desk offer a Free Trial.
Harvest is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
SolarWinds Service Desk is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Harvest Starts at $10.80/User/Month when Billed Yearly whereas for SolarWinds Service Desk Starts at $19/User/Month.
Some top alternatives to Harvest includes Connecteam, Smartsheet, clockodo, Timesheets.com, TrackingTime, Clockify, TimeTrack, Time Track Bill, Timesheet, Hyperlogs, Timet and Time Tracker by eBillity.
Some top alternatives to SolarWinds Service Desk includes Freshservice, ManageEngine ServiceDesk Plus, Ivanti Service Manager, Jira Service Desk, Symantec ServiceDesk, InvGate Service Desk, IBM Control Desk, HelpDesk, SysAid, Sitehelpdesk, HESK and TechExcel ServiceWise.