What are some alternatives?
When comparing TrackYourTime and Harvest, you can also consider the following products
ManicTime - Track your computer usage and use collected data to accurately tag time.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
TimeCamp - Time tracking and project management software for freelancers and companies.
Qbserve - Freelance time tracking, invoicing, and productivity improvement
Time Doctor - Time Tracking and Time Management Software that is accurate and helps you to get a lot more done each day.