A timeline of Google's messaging rivalry with Facebook. Original inspiration from source [23], enhanced and corrected from [33]: - 2006-02-07: Google Talk inte

A timeline of Google's messaging rivalry with Facebook. Original inspiration from source [23], enhanced and corrected from [33]: - 2006-02-07: Google Talk integration inside Gmail goes live [35] - 2006-09-26: Facebook opens up to everyone (not just colleges) [36] - 2007-02-14: (corrected date) Gmail opens up to everyone (not just invite-only) [37] - 2008-04-06: Facebook chat goes live [34] - 2008-07-11: iOS App Store launches [38] - 2008-08-26: Facebook hits 100 million active users [24] - 2008-09-23: Android 1.0 launches [39] - 2008-11-11: Google Talk introduces voice and video calling [40] - 2009-03-11: Google buys GrandCentral, launches Google Voice [1] - 2009-04-08: Facebook hits 200 million active users [25] - 2009-06: iOS gets push notifications [42] - 2009-06-25: Google Voice invitations being serviced [2] - 2009-09-15: Facebook hits 300 million active users [26] - 2010-02-04: Facebook hits 400 million active users [27] - 2010-05-20: Android gets push notifications [41] - 2010-06-21: FaceTime released with iOS 4 [43] - 2010-06-22: Google Voice opens up invite-free to everyone in the US [3] - 2010-07-21: Facebook hits 500 million active users [28] - 2011-01-05: Facebook hits 600 million active users [29] - 2011-05-30: Facebook probably hits around 700 million active users [30] - 2011-06-28: Google+ launches, with text chat "+Messenger" and video chat "+Hangouts" [4] - 2011-07-06: Facebook introduces video calling powered by Skype behind-the-scenes, needs installation [5] - 2011-08-09: Facebook introduces Messenger app [6] - 2011-09-22: Facebook hits 800 million active users [31] - 2011-10-12: iMessage released with iOS 5 - 2012-04-23: Facebook hits 900 million active users [32] - 2012-09-20: Facebook tries SMS sending from Messenger [7] - 2013-04-17: Wired editorial on "Will Google Hang Up on Voice?" [8] - 2013-05-15: Google launches 'Google Hangouts', which subsumes Google Talk, Google+ Messenger, Google+ Hangouts [9] - 2013-10-29: Facebook discontinues send-SMS support in Messenger, sends Messenger message instead [10] - 2013-10-29: Google Hangouts Android App gets SMS handler support [11] - 2014-02-19: Facebook announces it will acquire WhatsApp [12] - 2014-04-09: Facebook removes chat from its main app, forces people to use Messenger [13] - 2014-09-11: Google Hangouts gets Google Voice integration [14] - 2015-03-25: Facebook announces Messenger Platform for business, bot, and ad integration [15] - 2015-04-27: Facebook Messenger gets native video calling [16] - 2016-01-27: Hangouts 7.0 asks users to use Google Messenger for SMS instead [17] - 2016-06-14: Facebook Messenger gets Android SMS handler support [18] - 2016-07-13: Hangouts 11.0 removes support for merged conversations [19] - 2016-08-16: Google releases Duo [20] - 2016-09-21: Google releases Allo [21] - 2016-10-07: Duo is replacing Hangouts in the base Android install [22] - 2017-01-23: Google launches rebooted Google Voice app, with Hangouts-like UI [1] https://googleblog.blogspot.com/2009/03/here-comes-google-voice.html https://googleblog.blogspot.com/2009/03/here-comes-google-vo... [2] https://googleblog.blogspot.com/2009/06/google-voice-invites-on-their-way.html https://googleblog.blogspot.com/2009/06/google-voice-invites... [3] http://googlevoiceblog.blogspot.com/2010/06/google-voice-for-everyone.html http://googlevoiceblog.blogspot.com/2010/06/google-voice-for... [4] https://googleblog.blogspot.com/2011/06/introducing-google-project-real-life.html https://googleblog.blogspot.com/2011/06/introducing-google-p... [5] https://www.facebook.com/notes/philip-su/building-video-calling/10150229123673920 https://www.facebook.com/notes/philip-su/building-video-call... [6] https://newsroom.fb.com/news/2011/08/a-faster-way-to-message-on-mobile/ https://newsroom.fb.com/news/2011/08/a-faster-way-to-message... [7] https://techcrunch.com/2012/09/20/facebook-android-update-you-can-now-text-using-facebook-messenger-messages-section-redesigned/ https://techcrunch.com/2012/09/20/facebook-android-update-yo... [8] https://www.wired.com/2013/04/google-voice-future-uncertain/ https://www.wired.com/2013/04/google-voice-future-uncertain/ [9] http://www.theverge.com/2013/5/15/4318830/inside-hangouts-googles-big-fix-for-its-messaging-mess http://www.theverge.com/2013/5/15/4318830/inside-hangouts-go... [10] https://techcrunch.com/2013/10/29/facebook-messenger-phone-number/ https://techcrunch.com/2013/10/29/facebook-messenger-phone-n... [11] http://arstechnica.com/gadgets/2014/09/google-hangouts-gets-a-huge-update-including-google-voice-integration/ http://arstechnica.com/gadgets/2014/09/google-hangouts-gets-... [12] http://newsroom.fb.com/news/2014/02/facebook-to-acquire-whatsapp/ http://newsroom.fb.com/news/2014/02/facebook-to-acquire-what... [13] https://techcrunch.com/2014/04/09/facebook-messenger-or-the-highway/ https://techcrunch.com/2014/04/09/facebook-messenger-or-the-... [14] http://arstechnica.com/gadgets/2014/09/google-hangouts-gets-a-huge-update-including-google-voice-integration/ http://arstechnica.com/gadgets/2014/09/google-hangouts-gets-... [15] https://developers.facebook.com/blog/post/2015/03/25/introducing-messenger-platform-and-businesses-on-messenger/ https://developers.facebook.com/blog/post/2015/03/25/introdu... [16] http://newsroom.fb.com/news/2015/04/introducing-video-calling-in-messenger/ http://newsroom.fb.com/news/2015/04/introducing-video-callin... [17] http://arstechnica.com/gadgets/2016/01/google-hangouts-7-0-for-android-asks-users-to-stop-using-it-for-sms/ http://arstechnica.com/gadgets/2016/01/google-hangouts-7-0-f... [18] https://techcrunch.com/2016/06/14/facebook-messenger-texting/ https://techcrunch.com/2016/06/14/facebook-messenger-texting... [19] http://arstechnica.com/gadgets/2016/07/google-hangouts-for-android-removes-merged-sms-conversations-adds-video/ http://arstechnica.com/gadgets/2016/07/google-hangouts-for-a... [20] https://blog.google/products/duo/meet-google-duo-simple-1-to-1-video/ https://blog.google/products/duo/meet-google-duo-simple-1-to... [21] https://blog.google/products/allo/google-allo-smarter-messaging-app/ https://blog.google/products/allo/google-allo-smarter-messag... [22] http://www.theverge.com/2016/10/7/13202866/google-hangouts-allo-duo-core-android-apps http://www.theverge.com/2016/10/7/13202866/google-hangouts-a... [23] http://www.whoishostingthis.com/blog/2014/10/22/instant-messengers/ http://www.whoishostingthis.com/blog/2014/10/22/instant-mess... [24] https://www.facebook.com/notes/facebook/our-first-100-million/28111272130/ https://www.facebook.com/notes/facebook/our-first-100-millio... [25] https://www.facebook.com/notes/facebook/200-million-strong/72353897130/ https://www.facebook.com/notes/facebook/200-million-strong/7... [26] https://www.facebook.com/notes/facebook/300-million-and-on/136782277130/ https://www.facebook.com/notes/facebook/300-million-and-on/1... [27] http://web.archive.org/web/20100212075226/http://blog.facebook.com/blog.php?post=287542162130 http://web.archive.org/web/20100212075226/http://blog.facebo... [28] https://www.theguardian.com/technology/2010/jul/21/facebook-500-million-users https://www.theguardian.com/technology/2010/jul/21/facebook-... [29] http://www.businessinsider.com/facebook-has-more-than-600-million-users-goldman-tells-clients-2011-1 http://www.businessinsider.com/facebook-has-more-than-600-mi... [30] http://www.adweek.com/news/technology/facebook-nears-700-million-users-132116 http://www.adweek.com/news/technology/facebook-nears-700-mil... [31] http://mashable.com/2011/09/22/facebook-800-million-users/ http://mashable.com/2011/09/22/facebook-800-million-users/ [32] http://money.cnn.com/2012/04/23/technology/facebook-q1/ http://money.cnn.com/2012/04/23/technology/facebook-q1/ [33] https://news.ycombinator.com/item?id=11114518 https://news.ycombinator.com/item?id=11114518 [34] https://www.facebook.com/notes/facebook/facebook-chat-now-were-talking/12811122130/ https://www.facebook.com/notes/facebook/facebook-chat-now-we... [35] https://googleblog.blogspot.com/2006/02/chat-email-crazy-delicious.html https://googleblog.blogspot.com/2006/02/chat-email-crazy-del... [36] https://techcrunch.com/2006/09/26/facebook-just-launched-open-registrations/ https://techcrunch.com/2006/09/26/facebook-just-launched-ope... [37] https://googleblog.blogspot.com/2007/02/from-gmail-with-3.html https://googleblog.blogspot.com/2007/02/from-gmail-with-3.ht... [38] http://www.apple.com/pr/library/2008/06/09Apple-Introduces-the-New-iPhone-3G.html http://www.apple.com/pr/library/2008/06/09Apple-Introduces-t... [39] https://android-developers.googleblog.com/2008/09/announcing-android-10-sdk-release-1.html https://android-developers.googleblog.com/2008/09/announcing... [40] https://gmail.googleblog.com/2008/11/say-hello-to-gmail-voice-and-video-chat.html https://gmail.googleblog.com/2008/11/say-hello-to-gmail-voic... [41] https://blog.serverdensity.com/android-push-notifications-tutorial/ https://blog.serverdensity.com/android-push-notifications-tu... [42] https://www.urbanairship.com/push-notifications-explained https://www.urbanairship.com/push-notifications-explained [43] https://web.archive.org/web/20100609163523/http://www.engadget.com/2010/06/07/facetime-video-calling-added-to-iphone-4 https://web.archive.org/web/20100609163523/http://www.engadg...