Contents
MSN Messenger Service
1999–2000
2000–2001
MSN Messenger
2001
2001–2006
Windows Live Messenger
2005–2009
2009–2013; 2009–2014 (Mainland China)
Windows Live Messenger was discontinued in favor of Skype on April 8, 2013. Mainland China did not discontinue the app until October 31, 2014.
Macintosh versions
MSN Messenger Service for the Macintosh
1999–2001
MSN Messenger for Mac
2001–2002
2002–2004
2004–2006
Microsoft Messenger for Mac
2006–2008
2008–2010
2010–2011
Windows Messenger
2001–2004
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