Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.

AttendanceBot - Time & attendance tracking for distributed teams

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.

Shiftee - Shiftee streamlines the process of employee scheduling, time clock attendance to payroll by providing a solution to manage and help business

RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.

teamdeck - Teamdeck is a SaaS resource management tool with resource scheduling, leave management, time tracking and timesheet, and customizable reports features. Selected by Hill-Knowlton, Stormind Games, Wunderman Thompson. $3.60/per member.