The best alternatives to Harvest are Timelog, tinyTimeSheet, and LogSpace. If these 3 options don't work for you, we've listed a few more alternatives below.
LogSpace is an automated invoicing system backed by time and expense tracking. It's suited for freelancers that send invoices as well as teams that need to track time.
Team tracker makes hybrid working easier by focusing on the teams. See who's working in the office, at home or on holiday. Book hot desks, manage office space and instantly sync it all to Outlook and Teams.