Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Tasker - Tasker is an application for Android which performs Tasks (sets of Actions) based on Contexts...
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.
AutomateIt - Automate Your Android!
Pomodone - Pomodone is the easiest way to track your workflow using Pomodoro technique, on top of your current task management service.
LIama - LIama is a Location-Aware Mobile app that determines your location and helps you do lots of other stuff with ease.