Microsoft Project - Microsoft Office Project gives you robust project management tools with the right blend of...

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

GanttProject - Project scheduling and management tool

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.

Smartsheet - Smartsheet is an intuitive online project management tool enabling teams to increase productivity using cloud, collaboration, & mobile technologies.

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