WhatsApp Messenger, or simply WhatsApp, is an American freeware, crossplatform centralized messaging and Voice over IP (VoIP) service owned by Facebook, Inc. It allows users to send text messages and voice messages, make voice and video calls, and share images, documents, user locations, and other media. WhatsApps client application runs on mobile devices but is also …Open Whisper Systems (abbreviated OWS) was a software development group that was founded by Moxie Marlinspike in 2013. This group was responsible for starting the development of the Signal Protocol and the Signal messaging app. In 2018, Signal Messenger was incorporated as an LLC by Moxie Marlinspike and Brian Acton and then rolled under the nonprofit Signal …
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