Personal Assistant iPhone app
Siri is now a product of Apple Corp.
Siri is a virtual personal assistant incorporated as a feature of Apple iPhones beginning with the 4S generation.
Siri was originally developed by SRI International. SRI spun off Siri, Inc., in 2007, and this company launched a personal assistant app in February 2010. Siri, Inc., was acquired by Apple in 2010, and in October 2011 Apple announced that the iPhone 4S would be using this technology.