Xamarin - Create iOS, Android and Mac apps in C#
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.
Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Kony - Kony is a mobile application application development platform that facilitates companies to deliver innovative mobile solutions.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.