Instant messaging

• Discord (2015)
• Mattermost (2015)
• RocketChat
• Slack (2013)

See also

• Slack, Pagerly, /poll, /gcal, /remind, /confluence, AWS Chatbot, Slackbot, Slack API, Slack Workspace, Hubot, Slack notifications, Slackbot-LinkExpanding, uses: slackapi/slack-github-action, Search in Slack, Navigate Slack with your keyboard, Enterprise Grid, Slack App Managers
• XMPP, Profanity, Matrix (protocol), MQTT, CoAP, AMQP, MQTT, Libjingle, Mellium