Having used team chats based on Jabber, IRC, Slack (in that chronological order), there is a huge difference. Jabber and IRC have always been pure chats, whereas Slack is the first chat platform where people actually use integrations and bots to a large extent. (Also, Jabber/IRC doesn't have /remind, my personal killer feature about Slack.)
Comments
Having used team chats based on Jabber, IRC, Slack (in that chronological order), there is a huge difference. Jabber and IRC have always been pure chats, whereas Slack is the first chat platform where people actually use integrations and bots to a large extent. (Also, Jabber/IRC doesn't have /remind, my personal killer feature about Slack.)