[welly]

I think that was something available to Slack in the past when it had it's IRC gateway. Sadly they closed that down.

We all have our own ways of doing things and I personally prefer to have applications run independently so I like my Slack client and my IDE and terminal etc. etc. separate.

I've always found if one tool can do it all, it's generally a worse experience than dedicated software applications and doing a Cmd-TAB (I'm on a Mac) is just as simple as switching to another window in a single application