WhatsApp

WhatsApp Messenger
WhatsApp logo.svg
Developer(s) WhatsApp Inc.
Initial release January 2009; 9 years ago (2009-01)
Stable release(s) [±]
iOS 2.18.11 / January 11, 2018; 42 days ago (2018-01-11)[1]
Android 2.17.427 / November 29, 2017; 2 months ago (2017-11-29)[2]
Windows Phone 8, Windows 10 Mobile 2.17.262[3]
Symbian 2.16.57[4]
BlackBerry 2.17.2 / June 26, 2016; 19 months ago (2016-06-26)[5]
Preview release(s) [±]
Android 2.18.59 / February 21, 2018; 1 day ago (2018-02-21)[6]
Windows Phone 8, Windows 10 Mobile 2.18.24[7]
Written in Erlang[8]
Operating system Android, iOS, Windows Phone, BlackBerry OS, Symbian (there are Windows, macOS and web app clients that work only in presence of a connected mobile app client)
Type Instant messaging and social media
License Freeware
Alexa rank Positive decrease 69 (As of December 2017)[9]
Website www.whatsapp.com
WhatsApp Inc.
WhatsApp.svg
Type of business Subsidiary
Founded February 24, 2009; 8 years ago (2009-02-24)
Headquarters Mountain View, California, United States
Founder(s)
CEO Jan Koum
Employees 50[10]
Parent Facebook
Website whatsapp.com
Messaging with WhatsApp

WhatsApp Messenger is a freeware and cross-platform instant messaging and Voice over IP (VoIP) service.[45] The application allows the sending of text messages and voice calls, as well as video calls, images and other media, documents, and user location.[46][47] The application runs from a mobile device though it is also accessible from desktop computers; the service uses standard cellular mobile numbers. Originally users could only communicate with other users individually or in groups of individual users, but in September 2017 WhatsApp announced a forthcoming business platform which will enable companies to provide customer service to users at scale.[43]

The client was created by WhatsApp Inc., based in Mountain View, California, which was acquired by Facebook in February 2014 for approximately US$19.3 billion.[48][49] By February 2018, WhatsApp had a user base of over one and a half billion,[50][39] making it the most popular messaging application at the time.[39][51] WhatsApp has grown in multiple countries, including Brazil, India, and large parts of Europe.[39]

  1. ^ WhatsApp Inc. (2017). "WhatsApp Messenger". App Store. Apple. Retrieved 19 January 2018. 
  2. ^ WhatsApp Inc. (4 August 2017). "WhatsApp Messenger". APKMirror. Android Police. Retrieved 27 October 2017. 
  3. ^ WhatsApp Inc. "WhatsApp Messenger". Windows Store. Microsoft. Retrieved 7 August 2017. 
  4. ^ WhatsApp Inc. "WhatsApp for Nokia S60". whatsapp.com. WhatsApp Inc. Retrieved 4 April 2017. 
  5. ^ WhatsApp Inc. (26 June 2017). "WhatsApp Messenger". BlackBerry World. BlackBerry. Retrieved 7 August 2017. 
  6. ^ "WhatsApp Messenger APKs - APKMirror". APKMirror. 
  7. ^ "WhatsApp Beta – Windows Apps on Microsoft Store". Microsoft Store. 
  8. ^ Ainsley O'Connell (February 21, 2014). "Inside Erlang, The Rare Programming Language Behind WhatsApp's Success". fastcompany.com. Retrieved December 20, 2017. 
  9. ^ "Whatsapp.com Traffic Statistics". Alexa, Inc. October 8, 2017. Retrieved December 10, 2017. 
  10. ^ Metz, Cade (15 September 2015). "Why WhatsApp Only Needs 50 Engineers for Its 900M Users". Wired. Condé Nast. Retrieved 2 August 2016. 
  11. ^ a b c d e Parmy Olsen (February 2, 2014). "Exclusive: The Rags-To-Riches Tale Of How Jan Koum Built WhatsApp Into Facebook's New $19 Billion Baby". Forbes. Retrieved January 14, 2015. 
  12. ^ "WhatsApp 2.0 is submitted - WhatsApp Blog". Retrieved June 5, 2016. 
  13. ^ "Three-quarters of WhatsApp users are on Android, 22% on iOS (study)". Venturebeat.com. Retrieved June 5, 2016. 
  14. ^ "5 years of WeChat". Retrieved June 5, 2016. 
  15. ^ "Snapchat". Retrieved June 5, 2016. 
  16. ^ Schellevis, Joost (January 12, 2012). "What's app status: van Anderen os nog steeds te wijzigen" (in Dutch). Tweakers. Retrieved January 12, 2012. 
  17. ^ rvdm (January 12, 2012). "How What's app net works". Wire trip. Retrieved April 7, 2013. 
  18. ^ "Are my messages secure?". WhatsApp (FAQ). Zendesk. August 15, 2012. Retrieved January 29, 2013. 
  19. ^ "PrivCo". Privco.com. Retrieved May 30, 2016. 
  20. ^ "The Granddaddy Of Messaging Apps, WhatsApp, Finally Goes For A Subscription Model on iOS". Techcrunch.com. Retrieved June 8, 2016. 
  21. ^ "WhatsApp, the Internet Messenger, to Become Free". The New York Times. Retrieved August 28, 2016. 
  22. ^ "Russia's Zuckerberg launches Telegram, a new instant messenger service". Reuters.com. Retrieved June 5, 2016. 
  23. ^ "Voice Messaging Comes To Whatsapp". Techcrunch.com. Retrieved June 6, 2016. 
  24. ^ "WhatsApp Was Valued At ~$1.5B In Final Round Before Sale". Techcrunch. Retrieved February 22, 2014. 
  25. ^ "Facebook to Buy WhatsApp for $19 Billion". The Wall Street Journal. Retrieved August 28, 2016. 
  26. ^ "Hole In WhatsApp For Android Lets Hackers Steal Your Conversations". Techcrunch.com. Retrieved June 6, 2016. 
  27. ^ "Whatsapp now lets you disable Read notifications". November 15, 2014. 
  28. ^ "WhatsApp Web". January 21, 2015. 
  29. ^ "(Updated) WhatsApp begins crackdown on unlicensed 3rd party clients". Androidauthority.com. Retrieved June 6, 2016. 
  30. ^ "WhatsApp Says It's Not "Permanently" Banning Users From Its Service, Just Blocking Third-Party Clients". Techcrunch.com. Retrieved June 6, 2016. 
  31. ^ "Brazil Restores WhatsApp Service After Brief Blockade Over Wiretap Request". The New York Times. December 17, 2015. Retrieved August 28, 2016. 
  32. ^ "WhatsApp Is Briefly Shut Down in Brazil for a Third Time". The New York Times. July 19, 2016. Retrieved August 28, 2016. 
  33. ^ Ina Fried (January 18, 2016). "Facebook's Whatsapp is Now Free". Re Code. Vox Media, Inc. Retrieved January 18, 2016. 
  34. ^ "Whatsapp to Drop Subscription Fee". Wall Street Journal. Dow Jones & Company, Inc. January 18, 2016. Retrieved January 18, 2016. 
  35. ^ "No Subscription Charges For WhatsApp: Does Facebook Have A Monetization Strategy In Place?". Forbes. Retrieved May 30, 2016. 
  36. ^ "Brazil Arrests Facebook Executive in WhatsApp Data Access Case". The New York Times. March 1, 2016. Retrieved August 28, 2016. 
  37. ^ "WhatsApp adds support for document sharing, but only PDFs at launch". TechCrunch. March 2, 2016. Retrieved March 2, 2016. 
  38. ^ "Wassup WhatsApp? Is everything confidential?". Retrieved December 2, 2016. 
  39. ^ a b c d Metz, Cade (April 5, 2016). "Forget Apple vs. the FBI: WhatsApp Just Switched on Encryption for a Billion People". Wired. Condé Nast. Retrieved April 5, 2016. 
  40. ^ Lomas, Natasha (April 5, 2016). "WhatsApp completes end-to-end encryption rollout". TechCrunch. AOL Inc. Retrieved April 5, 2016. 
  41. ^ "WhatsApp Introduces End-to-End Encryption". The New York Times. April 5, 2016. Retrieved August 28, 2016. 
  42. ^ "Introducing WhatsApp's desktop app", WhatsApp Blog, 10 May 2016, retrieved 11 May 2016 
  43. ^ a b "Building for People, and Now Businesses". WhatsApp.com. 
  44. ^ http://news.klm.com/klm-first-airline-with-verified-whatsapp-business-account/
  45. ^ Metz, Cade (5 April 2016). "Forget Apple vs. the FBI: WhatsApp Just Switched on Encryption for a Billion People". Wired. Condé Nast. Retrieved 13 May 2016. 
  46. ^ Voice calling, March 12, 2015 
  47. ^ "WhatsApp Voice Calling". April 4, 2015. 
  48. ^ Albergotti, Reed; MacMillan, Douglas; Rusli, Evelyn M. (February 20, 2014). "Facebook's $18 Billion Deal Sets High Bar". The Wall Street Journal. pp. A1, A6. 
  49. ^ "Facebook to Acquire WhatsApp" (Press release). February 19, 2014. 
  50. ^ Constine, Josh (31 January 2018). "WhatsApp hits 1.5 billion monthly users. $19B? Not so bad". TechCrunch. Retrieved 8 February 2018. 
  51. ^ Leo Sun (September 11, 2015). "Facebook Inc.'s WhatsApp Hits 900 Million Users: What Now?". The Motley Fool. 

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