GeeksPhone - Electronics and iOS
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.
BlackPhone - Silent Circle is a secure communications firm offering enterprise communications solutions including software, devices, and services.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Media Atelier - Create invoices and estimates on your Mac
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.