The problem with IRC is that the plugins aren&#x27;t as discoverable and more of a pain in the neck to integrate.<p>When you&#x27;re not in channel on IRC, you don&#x27;t have access to  anything that was said prior to joining the channel which means you don&#x27;t even have any immediate history, or context to a conversation that is ongoing when you join. At least with Slack you have 10,000 messages of history, which is at least enough to give you the context of the discussion.<p>Also while probably irrelevant on a technical level, it&#x27;s just not as pretty and user friendly as Slack.