You should also include WorkDo to the list. WorkDo is more than just chat, it also has tools like HR, leave, expenses and attendance that other apps don’t have. And it does not require any integration with other apps. It’s built-in.

WorkDo has so many tools like tasks which can be used to track project progress. It also has notes for making announcements. Events can be used for meetings and office activities. It also has CRM function.

Please take a look and list WorkDo as one of the Slack alternatives. https://portal.workdo.co/