Let's just toss Apple in too.
Siri Wiki-
Development[edit]
Siri is a spin-out from the SRI International Artificial Intelligence Center, and is an offshoot of the US Defense Advanced Research Projects Agency's (DARPA)-funded CALO project.[3] It was co-founded by Dag Kittlaus, Adam Cheyer, and Tom Gruber.[3]
Siri's speech recognition engine was provided by Nuance Communications, a speech technology company.[4] This was not officially acknowledged by Apple nor Nuance for years,[5][6] until Nuance CEO Paul Ricci confirmed the information at a 2011 technology conference.[4] The speech recognition system makes use of sophisticated machine learning techniques, including convolutional neural networks and long short-term memory.[7]
The initial Siri prototype was implemented using the Active platform, a joint project between the Artificial Intelligence Center of SRI International and the Vrai Group at Ecole Polytechnique Fédérale de Lausanne. The Active platform was the focus of a PhD thesis led by Didier Guzzoni, who joined Siri as its chief scientist.[8]
Apple's first notion of a digital personal assistant was originally a concept video in 1987, called the Knowledge Navigator.[9][10]