Yes, both Time Doctor and Harvest offer a Free Trial.
Time Doctor is designed for Large Enterprises, Medium Business and Small Business.
Harvest is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Time Doctor Starts at $7/Month whereas for Harvest Starts at $10.80/User/Month when Billed Yearly.
Some top alternatives to Time Doctor includes clockodo, TMetric, Toggl Track, Hubstaff, TrackingTime, Clockify, TimeTrack, Timesheet, AtTrack and Time Tracker by eBillity.
Some top alternatives to Harvest includes clockodo, Timesheets.com, TrackingTime, Clockify, TimeTrack, Time Track Bill, Timesheet, Hyperlogs, Timet and Time Tracker by eBillity.