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.
Loxi - Easily add an events calendar to any website.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Event Calendar App - A simple, easy to manage, way of displaying events
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
Whenever - Casual calendar app for iOS