Similar to Microsoft_Office_Communications_Server

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  ワープゲイト

  
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  インスタントメッセンジャー

  Instant messaging#Review of products
  
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  Adium

  Adium
  
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  AMSN

  AMSN
  ▼-1 trends

  
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  AOL Instant Messenger

  AIM (software)
  
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  BlackBerry Messenger

  BBM (software)
  
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  Coccinella

  Coccinella (software)
  
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  Cock.li

  
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  Comm

  
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  DingTalk

  DingTalk
  
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  Element (ソフトウェア)

  Element (software)
  
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  Fire (インスタントメッセンジャー)

  
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  Gadu-Gadu

  Gadu-Gadu
  
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  Galago

  
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  Google Meet

  Google Meet
  
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  Google メッセージ

  Google Messages
  
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  GroupMe

  GroupMe
  
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  HCL Sametime

  HCL Sametime
  
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  ICQ

  ICQ
  
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  IMessage

  IMessage
  
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  Jami

  Jami (software)
  
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  Kik Messenger

  Kik Messenger
  
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  Kopete

  Kopete
  
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  LINE Lite

  
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  Mattermost

  Mattermost
  
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  Microsoft Messenger for Mac

  Windows Live Messenger#Microsoft Messenger for Mac
  
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  Miranda NG

  Miranda NG
  
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  MSN Web Messenger