Adding Slack to the list is just well, adding another problem if you ask me (which you didn't but I'll tell you anyway!). We don't need more protocols, we need more "aggregaters".
For FreeBSD, there are multiple IRC channels, 20 or so mailing lists, Google+, Google Groups, IRC, FreeBSD Forums, FreeBSD Wiki, Handbook, Developers handbook, Documentation handbook, Freshports, Bugzilla, Phabricator, Subversion AND Git! It's impossible to get a complete picture. That's not even including the many great blogs out there.
Biting the hand that feeds IT
