Mac version built into Safari has a lot of informative space and allows for custom CSS (right click > inspect elements) if you want it more personal and/or something puts you off in the standard settings.
Tons of integrations and bots makes it unique.
Inter-department communication in wizarding world relies on paper planes while muggles can easily manage everything with Slack ;)
Readability. It's disputed but HipChat is winning this battle due to the larger reading screen space.
No.
No.
No.
Excellent.
Technical Support:Good.
Yes.
Switched from HipChat.
Offers more freedom with search. More integrations.
Straightforward.
In-house.
Start with the free version first.
