IRC is no longer difficult to use; there are great software applications across nearly every device that can be named which can work with and present the RFC1459 protocol splendidly, including weechat [11], KiwiIRC [12], Textual [13], Palaver [14], to mIRC [15], and AdiIRC [16], among others!
IRC has bots hosted by the community that can hook into github like bitbot [17] and supybot [18] among others.
You can also stay connected to IRC using an IRC bouncer like KiwiBNC [19], znc [20], IRCCloud [21], Quassel [22], Bitlbee [23] or shamlessplug jbnc [24].
[2] https://oftc.net
[10] https://netsplit.de/networks/top100.php
[11] https://weechat.org/
[12] https://kiwiirc.com
[13] https://codeux.com/textual
[15] https://mirc.com/
[16] https://adiirc.com/
[17] https://github.com/jesopo/bitbot
[18] https://github.com/Supybot/Supybot
[19] https://kiwiirc.com/
[20] https://znc.in
[24] https://github.com/realrasengan/jbnc
Edit: Added a few that I accidentally left out. Thank you all! If I left anyone else out I apologize - IRC is so decentralized, spread out, and... alive... that it's hard to name all of the amazing projects, networks and implementations out there!