Teorex FolderIco - FolderIco allows to change the color of Windows folder in one click!
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.
Folder Marker - Change folder color in two mouse clicks for easy at-a-glance identification.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
CustomizerGod - It lets you customize almost any part of Windows according to your taste.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.