Earlier quoted context omitted.
My employer also recently switched from Hipchat to Slack, and I'd say Slack is vastly superior. Most important for me are the notifications. Slack lets you set per-channel notification settings. With Hipchat I'd either miss messages I wanted to see or have to get constant notifications. "More granular notifications" was either the #1 or #2 highest-voted issue in their feature requests for over three years , and they'…
Since I used the keyboard for most of my navigation in HipChat I find Slack incredibly annoying. With HipChat I could rearrange channels and have my most often used 3 at the top and switch between with a couple keystrokes. With Slack it's so much more cumbersome. Slack feels much slower. In Hipchat you can edit your last message with Vim style substitution strings. i.e.: s/were/where/ The Channel/Group distinction in…
Slack added @here a few weeks ago. Otherwise that would have been on my list of Hipchat pluses.
Being able to rearrange channels would be nice, but it isn't a big deal to me. I mostly use the "Jump to next unread message" hotkey in Slack to switch between channels.