Similar to Zimbra
Discord
Discord▼-1 trendsYahoo! Messenger
Yahoo MessengerEudora
Eudora (email client)GroupWise
GroupWiseMobileimap
Spark (アプリケーション)
Spark (application)MDaemon
MDaemonMicrosoft Exchange Server
Microsoft Exchange ServerEnterprise 2.0
Enterprise 2.0Microsoft Office Communications Server
Skype for Business Server
Skype for Business Serverインスタントメッセージ
Instant messagingBlackBerry Messenger
BBM (software)Google メッセージ
Google MessagesKik Messenger
Kik MessengerMattermost
MattermostZalo
ZaloSNOW (アプリケーション)
Snow (app)プレゼンス情報
Presence informationAdium
AdiumAOL Instant Messenger
AIM (software)Comm
ICQ
ICQMicrosoft Lync
Microsoft Messenger for Mac
Windows Live Messenger#Microsoft Messenger for MacMSN メッセンジャー
Mumble
Mumble (software)Skype
Skype