It can be argued that there's no advantage of slack over anything because it is cloud based[1], is not fully cross-platform (no linux client), is proprietary cl

It can be argued that there's no advantage of slack over anything because it is cloud based[1], is not fully cross-platform (no linux client), is proprietary closed source centralized service, and so on. [1]: http://www.wired.com/2015/03/slack-admits-hacked-enables-2-factor-authentication/ http://www.wired.com/2015/03/slack-admits-hacked-enables-2-f...