Whatsapp messenger is a freeware and cross-platform instant messaging service for smartphones. It uses the internet to make voice calls, one to one video calls; send text massages, image, Gif, videos, documents user location, audio files,phone contact and voice notes using standard callular mobile number. Originally users could only communicate with other user individually or invgroup ofbindividual users, but in september 2017 announced a forthcoming plathform which will enable companies to provide customers service to users at scale all data are end-to-end encrypted it also incorporates a feature called status, which allows users to upload photo and videos to a 24-hours-lifetime feed that, by default, are visible to all contacts, similar to snapchat,facebook and instagram stories.
WhatsApp messenger 
Developer(s) facebook
Initial release january 2009;8 years ago
Stable release(s)
ios. 2.17.52/september 24,2017 days ago
Android 2.17.395/october 25,2017;4 days ago
Windows 2.17.262
Iphone 8
Windows
10 mobile
Symbia 2.16.57
Blackberry 2.17.2/ june 26,2016;15 month ago
Previews release(s)
Android 2.17.400/ october 26,2017;3 days ago
Windows 2.17.280
Iphone 8
Windows 10
Mobile
Development status. Active
Written in Erlang
Operating system cross-platform
Available in. Multilingual
Type Instant messaging and social media
License freeware, proprietary
Alexa rank (* - *) 72 (october 2017)
Website www. Whatsapp.com
Whatsapp. Inc.
Type of Subsidiary
Business
Founded februar 24,2009;8 years ago
Headquaters mountain view, california united states
Founder(s) jan koum
Brian acton
CEO Jan koum
Employees 50
Parent facebook
Website whatsapp.com
The client was created by whatsapp inc., based in moutain view, california, which was acquired by facebook in february 2014 for approximately US$19.3 billion. By february 2016, whatsapp had a user base of ove one billion, making it the most popular messaging application at the time .