Slack

wikipedia:Slack (software) (2013)

• Internet Relay Chat (IRC)
• Jitsi (2003)
• Mattermost (2015)
• Matrix (client: Riot)
• Rocket.Chat (at least 2016)

• Zulip
• Keybase (open-source client with proprietary server)
• Wire (Open Source - End to End Encrypted)
• Gitter (2014)
• Discord (2015)

Related terms

• XMPP
• Microsoft Teams
• LiveChat (2002)
• Electron
• .travis.yml notifications

See also

• XMPP, Profanity, Matrix (protocol), MQTT, CoAP, AMQP, MQTT, Libjingle, Mellium
• Instant messaging (IM), Messenger, Slack, Mattermost, RocketChat, Gitter, Discord, Microsoft Teams, Skype, Amazon Chime, Zoom, Google Chat, AWS Chatbot, LiveChat, APNs, Arattai, Zulip, Chanty, Fleep, Spaces, Zoho Connect, QQ, WhatsApp, Cliq, iMessage, Telegram
• Mail, email, Notifications, Gmail, Hotmail, ProtonMail, Gmail API, Amazon WorkMail, Zoho mail, Email alias, iCloud, Custom email