What followed was a quick back and forth on Twitter about the merits of Slack vs. open and accessible systems like IRC.
Don’t use Slack?
Christian Heilmann

You may already be aware of this, but slack can be connected to IRC through a XMPP gateway. https://get.slack.help/hc/en-us/articles/201727913-Connecting-to-Slack-over-IRC-and-XMPP

Haven’t tried it personally though.

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