source? or at least names of networks/IRCds?
freenode at least has 19 channels with more than 1000 users currently, and one with just barely more than 2000.
##linux 2072 :It's official! We're now Linux.Chat! | Channel website: http://linux.chat | Pastebin: http://paste.linux.chat | Spammers or trolls? use !ops <troll's nick> <reason>". | For op assistance, join ##linux-ops | Feel at home and enjoy your stay
#ubuntu 1798 :Official Ubuntu Support Channel | IRC Guidelines: http://ubottu.com/y/gl | IRC info: http://ubottu.com/y/irc | Pastes to http://paste.ubuntu.com/ | Download: http://ubottu.com/y/dl | Currently supported: 12.04 LTS, 14.04 LTS, 15.04, 15.10
#python 1763 :Don't paste, use https://bpaste.net/+python | http://bit.ly/psf-coc | NO LOL | Tutorial: http://bit.ly/MCAhYx | New programmer? http://goo.gl/c170V | Specify 2.x or 3.x in your question | Find your local User Group: http://goo.gl/S1Zsq | #python-fr #python.de #python-es #python.tw #python.pl #python-br #python-nl #python-ir #python.it #python-ro #python-india #python-hu #python-dev
#debian 1707 :Debian 8 Jessie released! /msg dpkg jessie ; /msg dpkg wheezy->jessie ; /msg dpkg install jessie | current point releases: /msg dpkg 8.2; /msg dpkg 7.9 | NO FLOOD: /msg dpkg paste | /msg bots NOT people | offtopic: #debian-offtopic | testing/unstable: #debian-next (irc.oftc.net) | chanlogs: /msg dpkg irclog
#archlinux 1655 :Welcome to Arch Linux World Domination, Inc. <+> Be kind to the people who are helping you. Be kind to the people you are trying to help. <+> FOSDEM 2016 participation! https://lists.archlinux.org/pipermail/arch-events/2015-October/000544.html <+> Yes we know about Twitch
#freenode 1566 :Welcome to #freenode | tor-sasl is offline until further notice | Staff are voiced; some may also be on /stats p -- you can /msg us at any time | FAQ: https://freenode.net/faq.shtml | Channel guidelines: https://freenode.net/poundfreenode.shtml | Blog: https://blog.freenode.net | Be nice!
#haskell 1505 :http://www.haskell.org/ | https://wiki.haskell.org/IRC_channel | Paste code/errors: http://lpaste.net/new/haskell | Logs: http://tunes.org/~nef/logs/haskell/?C=M;O=D http://ircbrowse.net/day/haskell/today?mode=recent | http://reddit.com/r/haskell | Administrative issues: #haskell-ops | Hackage status? http://status.haskell.org | http://downloads.haskell.org
#Node.js 1252 :Can't talk? Get registered on freenode (http://freenode.net/faq.shtml#nicksetup ) | Current Stable v5.0.0 (LTS: Argon v4.2.1) | Mission Statement: http://bit.ly/node-irc-mission-statement | Info: http://nodeirc.info | Logs: http://logs.nodejs.org/node.js/index | On codes of conduct: http://j.mp/1RFlyvr http://blog.izs.me/post/30036893703/policy-on-trolling
#go-nuts 1242 :isgo1point5.outyet.org | golang.org | known issues: golang.org/issue | channel log: botbot.me/5/log | don't ask to ask; just ask | ʕ◔ϖ◔ʔ | gophercon2015 videos: https://goo.gl/vKWB3Q
##javascript 1207 :Can't talk? Get registered on freenode (HOWTO: http://freenode.net/faq.shtml#nicksetup ). | ECMAScript, JavaScript. JS *not* Java. | Say "!help" (or ask and wait). | Say "!mdn abc" for docs on "abc". | Don't paste code in the channel.
#git 1169 :We use git, but don't be a git. Help given and wanted, or just gorge on candy | Current stable version: 2.6.2 | Start here: http://jk.gs/git | Getting "cannot send to channel"? /msg gitinfo .voice | Beware the git-reaper this Hallow's Eve: he comes for your rebases
##security 1152 :Computer & Physical Security http://fnsecurity.org/ http://ow.ly/gsVTo | Type !op to summon staff - Be nice or GTFO. -- Toothe is seeking his stalker from a security presentation on Oct 27!
#bitcoin 1126 :Current v0.11.1 | DO NOT POST ADDRESSES | uPnP vuln: https://bitcoin.org/upnp-vulnerability | https://bitcoin.org/ | bitcoin.com is SCAMMY | https://en.bitcoin.it/wiki/Faq | No pricetalk (#bitcoin-pricetalk), ads, trading (#bitcoin-otc), begging, altcoins | Web wallets will probably steal your money | URLs are often MALWARE
#ansible 1123 :Ansible - http://docs.ansible.com *** 1.9.4-1 has been released - https://groups.google.com/forum/#!topic/ansible-announce/r_uNM1lWlAE *** Ansible 2.0.0 beta 2 is ready for testing - https://groups.google.com/forum/#!topic/ansible-project/krpeTwi3mpo
#gentoo 1103 : Gentoo Linux Support | Can't speak? /j #gentoo-ops | long pastes: dpaste.org | masked by license? http://x.vu/WgxYLs | | Unworking hibernate and suspend? emerge -1 upower-pm-utils | firmware not loading? http://goo.gl/MzVLBN | perl conflicts? http://goo.gl/n1FMk8 | Be nice! http://xrl.us/kftd
#bash 1082 :FAQ: http://mywiki.wooledge.org/BashFAQ | Guide: http://mywiki.wooledge.org/BashGuide | Ref: http://gnu.org/s/bash/manual | http://wiki.bash-hackers.org/ | http://mywiki.wooledge.org/Quotes | Check your script: http://www.shellcheck.net/ | Mailing list: https://lists.gnu.org/mailman/listinfo/help-bash | Devel: http://xrl.us/bmodjy
##networking 1074 :Computer Networking | If you have a question, just ask it! | Please don't paste - http://paste.debian.net | M = mega = (10^6). m = milli = (10^-3). Mi = mebi = (2^20). B = bytes. b = bits. | Vendor Help = #$vendor | pastebin iptables-save | Why aren't you using IPv6 yet? | IP address classes died in 1993 | VPNs were not designed for anonymity https://goo.gl/iLyXUP
#vim 1050 :Can't Talk? Get Registered on freenode (HOWTO: http://ur1.ca/90niw) | Vim 7.4.900 http://www.vim.org | Don't ask to ask! | Use :help and :helpgrep | WIKI: http://vim.wikia.com | PASTE: http://vpaste.net/?ft=vim | DONATE: http://www.vim.org/sponsor
#puppet 1000 :Puppet Enterprise 2015.2: http://puppetlabs.com/puppet/whats-new | Puppet 4: http://bit.ly/1fCLbPX | Help: http://{ask,docs}.puppetlabs.com | Beaker users read this! http://bit.ly/1zE2DYU | Bugs/Improvements: https://tickets.puppetlabs.com/ | Logged http://bit.ly/11ifvbU | Community guidelines: http://bit.ly/1wTNy65 | PuppetConf Videos http://bit.ly/1NWiHQb
now, the volume of chat may be too much to read for some people, but that's not an issue with the protocol.