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Not to be confused with the Spanish town Viver.
Viber on Android.png
Viber call and contacts in an outdated version
Original author(s) Viber Media (Rakuten Inc.)
Developer(s) Viber Media
Initial release December 2, 2010; 4 years ago (2010-12-02)
Stable release
  • Android: (September 30, 2015; 56 days ago (2015-09-30)[1]) [±]
  • iOS:
    5.6.0 (September 30, 2015; 56 days ago (2015-09-30)[2]) [±]
  • BlackBerry OS:
    3.1.16 (November 19, 2013; 2 years ago (2013-11-19)[3]) [±]
  • Windows Phone: (March 31, 2015; 7 months ago (2015-03-31)[4]) [±]
Preview release
  • Blackberry OS (beta):
    3.1.1 (November 17, 2013; 2 years ago (2013-11-17)[5]) [±]
  • Windows Phone: (April 14, 2014; 19 months ago (2014-04-14)[6]) [±]
Written in C/C++/Python (desktop, using SIP and Qt frameworks), Objective-C (iOS), Java (Android)
Operating system Windows, Mac OS, Android, BlackBerry OS, iOS, Series 40, Symbian, Bada, Windows Phone, Linux (Ubuntu, Fedora, openSUSE, Debian)
Available in 30 languages[7]
Type Instant messaging client & VoIP
License Freemium

Viber is an instant messaging and Voice over IP (VoIP) app for smartphones developed by Viber Media. In addition to instant messaging, users can exchange images, video and audio media messages. The client software is available for Apple iOS, Android, BlackBerry OS, Nokia Series 40, Symbian, Bada, Windows Phone, Mac OS, and Microsoft Windows.[8] A 64-bit Linux version is available in both .deb (Debian & Ubuntu) and .rpm (Fedora & openSUSE) package formats.[9] Viber works on both 3G/4G and Wi-Fi networks. It first requires installation on a phone in order to work on a desktop operating system environment.[10] Viber has over 100 million monthly active users from its 280 million global registered users.[11]


Viber was founded by four Israeli partners: Talmon Marco, Igor Magazinnik, Sani Maroli and Ofer Smocha, with Marco as its CEO.[12] Viber was initially launched for iPhone on December 2, 2010, in direct competition with Skype. A pre-release version for Android restricted to 50,000 users appeared in May 2011; an unrestricted version was released on July 19, 2012. Viber for BlackBerry and Windows Phone devices was launched on May 8, 2012.[13] On reaching 90 million users on July 24, 2012, group messaging service and HD Voice engine were added to both Android and iPhone applications. Applications for Nokia's Series 40,[14] Symbian[15] and Samsung's Bada platform[16] were also announced on the same day.[17]

Initially, the voice calling feature was only available for iPhone and Android applications, with a promise that voice would be added in upcoming versions for Bada, Symbian and Windows Phone applications, with no mention of either Series 40 or Blackberry OS. The limitation seems to lie in the core of Blackberry OS and Series 40 which does not have easy support for VoIP apps.[18]

On September 22, 2012, HD quality phone calls and hold group-messaging sessions were made available for Windows Phone but only for Nokia users,[19] as part of exclusive partnership with Nokia.[20] Viber with voice was officially released for all Windows Phone 8 devices on April 2, 2013.[21]

On July 24, 2013, Viber's support system was defaced by Syrian Electronic Army. According to Viber, no sensitive user information was accessed.[22]

In August 2013, Viber for Linux was released as a public beta[23] and in August 2014 a final version.[24] Initially, only 64-bit binaries were made available for download.

On February 13, 2014, Rakuten announced they had acquired Viber for $900 million.[25] The sale of Viber earned Israel's Shabtai family (Benny, his brother Gilad, and Gilad's son Ofer) some $500 million from their 55.2% stake in the company.[26][27]


On November 4, 2014, Viber scored 1 out of 7 points on the Electronic Frontier Foundation's secure messaging scorecard. Viber received a point for encryption during transit but lost points because communications are not encrypted with a key the provider doesn't have access to (i.e. the communications are not end-to-end encrypted), users can't verify contacts' identities, past messages are not secure if the encryption keys are stolen (i.e. the service does not provide forward secrecy), the code is not open to independent review (i.e. the code is not open-source), the security design is not properly documented, and there has not been a recent independent security audit.[28][29] AIM, BlackBerry Messenger, Ebuddy XMS, Hushmail, Kik Messenger, Skype, and Yahoo Messenger also scored 1 out of 7 points. In contrast, OpenWhisper Systems' free, open source TextSecure and Signal scored perfect 7 out of 7 on the EFF Secure Messaging Scorecard, as did the free ChatSecure, Cryptocat, Pidgin with Off-the-Record Messaging, and the commercial Silent Circle suite. Also Telegram scored a perfect score for its "secret chats." [28]


The actual functionality varies from platform to platform with iOS and Android being the first to receive new features. Viber includes text, picture and video messaging across all platforms, with voice calling available only to iPhone, Android and Microsoft's Windows Phone although HD voice is planned for Windows Phone 8.[30] The application's user interface includes tab bar on the bottom giving access to messages, recent calls, contact, the keypad and a button for accessing more options. Upon installation, it creates a user account using one's phone number as username. Viber synchronizes with the phone's address book, so users do not need to add contacts in a separate book. Since all users are registered with their phone number, the software returns all Viber users among one's contacts. In 2012, Viber added smileys and other graphical messaging images.

Viber is also now available on Windows and Mac OS X.[when?]

As of December 2013, Viber officially launched Viber Out, a feature that provides users the option to call mobile and landline numbers; thus Viber users can call people not using a Viber app. Viber Out was originally released in November only to help Typhoon Haiyan victims in the Philippines connect with their loved ones. To use the new feature, users have to visit the "More" tab and choose Viber Out. No update is needed for the feature.[31] Viber Out calls to landlines and non-Viber mobile phones around the world are charged at varying rates per minute, requiring users to buy credit.


Viber Media is a Las Vegas and Cyprus-registered company[32][33] with its development centers in Belarus[34] and Israel.[35] The company was founded by Marco and Magazinnik, who are friends from the Israel Defense Forces.[36] The company is run from Israel, with much of its development outsourced to Belarus in order to lower labor-costs.[36]

Founded in 2010, Viber was co-owned by its four Israeli and Belarusian founders: Marco, Magazinnik, Maroli and Smocha, prior to the startup's $900 million sale to Rakuten. At that sale price, the founders each realized over 30 times return on their investments.[12]

Marco and Magazinnik are also co-founders of the P2P media and file-sharing client iMesh.[37]

In its first two years of availability, Viber did not generate revenues. It began doing so in 2013, via user payments for Viber Out voice calling and the Viber graphical messaging "sticker store". The company was originally funded by individual investors, described by Marco as "friends and family".[38] These investors sank $20 million into the company, which had 120 employees as of May 2013.[39]

See also[edit]


  1. ^ Viber Media S.à r.l. (2014-12-18). "Viber - Android Apps on Google Play". Google Play. Google. Retrieved 2015-04-13. 
  2. ^ Viber Media, Inc (2015-09-30). "Viber On the App Store on iTunes". App Store. Apple. Retrieved 2015-09-30. 
  3. ^ Viber Media (2013-11-19). "BlackBerry World - Viber". BlackBerry App World. Research In Motion (RIM). Retrieved 2014-04-20. 
  4. ^ Viber Media (2015-03-31). "Viber". Windows Phone Marketplace. Retrieved 2014-04-20. 
  5. ^ Viber Media (2013-11-19). "Viber". BlackBerry App World. BlackBerry Limited. Retrieved 2014-04-20. 
  6. ^ Viber Media (2014-04-14). "Viber". Windows Phone Marketplace. Microsoft. Retrieved 2014-04-20. 
  7. ^ "Supported Languages". Viber. Retrieved 30 January 2014. 
  8. ^ "Viber - Frequently asked questions". Viber Media. Retrieved May 13, 2013. 
  9. ^ "Viber for Linux PC - Viber Desktop". Viber. Retrieved 16 May 2015. 
  10. ^ WSJ Staff. "Viber Unveils Desktop App". WSJ. Retrieved 16 May 2015. 
  11. ^ After Rakuten acquisition, Viber reveals it has 100 million active users. February 14, 2014. Steven Millward, Tech in Asia.
  12. ^ a b "אקזיט ענק: רקוטן היפנית רוכשת את וייבר תמורת כ-900 מיליון דולר". כלכליסט - Retrieved 16 May 2015. 
  13. ^ Viber for BlackBerry and Windows Phone 7 Now Available
  14. ^ "Nokia Store: Download Viber and many other games, wallpaper, ringtones and mobile apps on your Nokia phone". Retrieved 2013-06-06. 
  15. ^ "Nokia Store: Download Viber and many other games, wallpaper, ringtones and mobile apps on your Nokia phone". Retrieved 2013-06-06. 
  16. ^ "Viber for Bada - Free messages on Samsung Bada". Retrieved 2013-06-06. 
  17. ^ Cooper, Daniel (September 11, 2012). "Viber comes to Symbian, S40 and Bada, adds HD voice calling and group messaging to Nokia Lumia handsets". Engadget. Retrieved 13 February 2013. 
  18. ^ "Why Viber won’t have free phone calls on Blackberry App soon". Retrieved 16 May 2015. 
  19. ^ "Viber for Nokia Lumia smartphones updated to v2.2, Adds HD Voice Calling". SymbianTweet. 2012-09-22. Retrieved 2013-06-06. 
  20. ^ Cooper, Daniel (2012-09-11). "Viber comes to Symbian, S40 and Bada, adds HD voice calling and group messaging to Nokia Lumia handsets". Retrieved 2013-06-06. 
  21. ^ "WP8 Users Rejoice! Viber With Voice For Windows Phone 8 Has Been Released". Retrieved 2013-04-02. 
  22. ^ Crook, Jordan. "Viber Attacked By Syrian Electronic Army". TechCrunch. Retrieved 29 August 2014. 
  23. ^ "Popular mobile IM/VoIP app 'Viber' available for Linux". WebUpd8. 26 August 2013. Retrieved 12 October 2013. 
  24. ^ "Viber 4.2 Finally Released For Linux". phoronix. 
  25. ^ "Japanese Internet Giant Rakuten Acquires Viber For $900M". TechCrunch. February 13, 2014. Retrieved February 14, 2014. 
  26. ^ "בני שבתאי את הונו מעבודה בקזינו בסווזילנדהעצום - כל הדרךכוכב שבתאי: כך בנה איש העסקים" [The Star of Shabtai: This is How the Businessman Benny Shabtai Has Amassed His Huge Fortune]. Forbes (in Hebrew). 6 June 2014. 
  27. ^ "Most of Viber's owners are based abroad including the Shabtais with a 55.2% stake". Globes. 16 February 2014. 
  28. ^ a b "Secure Messaging Scorecard. Which apps and tools actually keep your messages safe?". Electronic Frontier Foundation. 4 November 2014. Retrieved 1 June 2015. 
  29. ^ "Only 6 Messaging Apps Are Truly Secure". PC Magazine. 5 November 2014. Retrieved 8 January 2015. 
  30. ^ "Viber's HD Voice Feature for Windows Phone 8 "Coming Very Soon"". Retrieved 2013-02-06. 
  31. ^ Crook, Jordan. 10 December 2013. TechCrunch. "Viber Officially Launches Viber Out, Letting Users Call Mobile And Landline Numbers"
  32. ^ Viber sold for $900m by Hillel Koren, 14/02/2014, 14:55
  33. ^ "Viber - DMCA Policy". Viber. Retrieved 16 May 2015. 
  34. ^ "Viber Media". Foursquare. Retrieved 16 May 2015. 
  35. ^ "Top 10 iPhone apps from Israel". ISRAEL21c. Retrieved 16 May 2015. 
  36. ^ a b The Skype Killers of Belarus By Brett Forrest August 23, 2012, Bloomberg Businessweek, Technology
  37. ^ Talmon Marco's profile on LinkedIn
  38. ^ "Viber founder: 'People should be concerned about privacy'". theguardian. 
  39. ^ Parmy Olson (7 May 2013). "Free-Calling App Viber Jumps To Desktop, Hits 200 Million Users". Forbes. Retrieved 16 May 2015. 

External links[edit]