Mobile operating system
The company's growth has accelerated dramatically since being chosen by Microsoft as a hardware platform development partner for the Windows Mobile operating system (based on Windows CE). HTC also works with Google to build mobile phones running Google's Android mobile OS such as the Nexus One. HTC's sales revenue totalled $2.2 billion for 2005, a 102% increase from the prior year. In 2005 it was listed as the fastest-growing tech company in "BusinessWeek"s Info Tech 100.