Apple App Store Hits 3 Billion Downloads

Android Android is mobile operating system from Google. The software was originally built by a company called Android Inc, that was purchased by Google in 2005. From its modest debuts, Android has become a powerhouse that powers not only smartphones and tablet, but a host of other less high-profile devices and gadgets. Although Android is not a community-driven project, Google does release the source code as open-source under the Apache license. 

iOS was once upon a time called iPhone OS, or "operating system", which is the software that provides all the basic device functionality and is the interface between the hardware and applications. iOS was introduced with the iPhone on January 9 2007, and it was originally not intended to be programmable by third parties. Steve Jobs had envisioned that developers could create Web Apps that would run in the browser. This changed less than one year after when the iPhone SDK (software development kit) was introduced in October 2007. Today, hundreds of thousands of apps have been created for this platform. iPhone OS became iOS on June 2010. Interestingly, both iPhone and iOS were former trademarks of Cisco, that Apple now uses under a license.