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.
Paymo - Manage projects, track time, create invoices, and get paid online.
Buddy Punch - Cloud based time tracking, scheduling, and payroll solution that streamlines payroll for small and mid-sized businesses. Employees can punch in on their desktop or mobile devices.
ManicTime - Track your computer usage and use collected data to accurately tag time.
ClockShark - The simplest way to track, schedule, and manage your crew's time. Built for local construction, field service, and franchises
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.