IRC channels

Most of the following Bitcoin-related IRC channels are available on Freenode:

There are also a Bitcoin integrated web chat network, CoinChat.

Bitcoin Project

Channel	Description
IRC Web #bitcoin	General Bitcoin-related discussion.
IRC Web #bitcoin-dev	Bitcoin software development. (history)
IRC Web #bitcoin-politics	Discuss politics with other Bitcoin users.
IRC Web #bitcoin-gaming	Bitcoin gamers hangout.
IRC Web #bc-news	RSS News related to Bitcoin.
IRC Web #bitcoin-marketing	Marketing and promotion of bitcoin
IRC Web #bitcoin-gentoo	Gentoo community.
IRC Web #bitcoin-watch	Streaming Bitcoin transactions, including market data.
IRC Web #bitcoin-bots	Bot and bot-related discussion; trading bots, IRC bots, utility bots.
IRC Web #bitcoin-police	Bitcoin Police Investigates incidents related to Bitcoin.
IRC Web #bitcoin-court	Bitcoin Court Settles disputes between parties.
IRC Web #bitcoin-tweets	Automated announce of bitcoin-related tweets.
IRC Web #bitcoin-church	Bitcoin Church Discussion of our savior Satoshi

Local communities

IRC Web #bitcoin-otc-eu	European OTC trading marketplace.
IRC Web #bitcoin-otc-ru	Russian OTC trading marketplace.
IRC Web #bitcoin-otc-uk	United kingdom OTC Trading Marketplace.Founder Angus Bates.
IRC Web #bitcoin-aus	Aussie bitcoin community.
IRC Web #bitcoin-br	Brazilian bitcoin community.
IRC Web #bitcoin-cad	Canadian bitcoin community.
IRC Web #bitcoin-cn	Chinese bitcoin community.
IRC Web #bitcoin-dk	Danish bitcoin community.
IRC Web #bitcoin-de	German bitcoin community.
IRC Web #bitcoin-il	Israeli bitcoin community.
IRC Web #bitcoin-nl	Dutch bitcoin community.
IRC Web #bitcoin-romania	Romanian bitcoin community.
IRC Web #bitcoin-ve	Venezuelan bitcoin community.
IRC Web #btc.chat	Russian bitcoin community.

Mining Related Communities

Channel	Description
IRC Web #bitcoin-mining	Discussion and support related to mining.
IRC Web #bitcoin-fpga	Discussion and support specific to FPGA mining.
IRC Web #cgminer	Discussion and support specific to CGMiner mining ASIC/FPGA/GPU.
IRC Web #btc.chat.miners	Russian discussion of mining specification.
IRC Web #eligius	Eligius mining pool community (also support for BFGMiner and Eloipool)
IRC Web #give-me-coins	Give Me COINS mining pool community
IRC Web #ozcoin	Ozco.in mining pool community
IRC Web #xkcd-bitcoin	XKCD Pool
IRC Web #bitcoins.lc @ Quakenet	Bitcoins.lc Pool
IRC Web #bithasher	Bit Pool Mining
IRC Web #p2pool	P2Pool decentralized mining pool
IRC Web #btcserv	Btcserv.net Mining Pool Community
IRC Web #bitminter	BitMinter Mining Pool Community

Communities for Exchanges and Trading

Channel	Description
IRC Web #bitcoin-assets	Discussion of securities and other asset investments, including those listed on GLBSE or MPEx.
IRC Web #bitcoin-auction	Live auctions over IRC.
IRC Web #GLBSE	Talk regarding the GLBSE trading platform.
IRC Web #bitcoin-market	Streaming market data (only), no chat.
IRC Web #bitcoin-markets	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-aud	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-bgn	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-brl	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-cad	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-chf	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-eur	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-gbp	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-hkd	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-inr	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-jpy	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-nzd	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-pln	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-rub	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-sek	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-sgd	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-sll	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-thb	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-usd	Streaming market data (only), no chat.
IRC Web #bitcoin-markets-zar	Streaming market data (only), no chat.
IRC Web #bitcoin-otc	Over-the-counter trading marketplace and discussion. (history)
IRC Web #bitcoin-escrow	Third party escrow agents.
IRC Web #bitcoin-otc-ticker	Streaming market data form the #bitcoin-otc order book.
IRC Web #bitcoin-otc-ratings	Updates to ratings on the #bitcoin-otc Web of Trust.
IRC Web #bitcoin-pit	Only over-the-counter trading.
IRC Web #bitcoin-tickers	Bitcoin tickers for all bitcoin markets
IRC Web #bitcoin-tickers-aud	Bitcoin tickers for AUD bitcoin markets
IRC Web #bitcoin-tickers-bgn	Bitcoin tickers for BGN bitcoin markets
IRC Web #bitcoin-tickers-brl	Bitcoin tickers for BRL bitcoin markets
IRC Web #bitcoin-tickers-cad	Bitcoin tickers for CAD bitcoin markets
IRC Web #bitcoin-tickers-chf	Bitcoin tickers for CHF bitcoin markets
IRC Web #bitcoin-tickers-eur	Bitcoin tickers for EUR bitcoin markets
IRC Web #bitcoin-tickers-gbp	Bitcoin tickers for GBP bitcoin markets
IRC Web #bitcoin-tickers-hkd	Bitcoin tickers for HKD bitcoin markets
IRC Web #bitcoin-tickers-inr	Bitcoin tickers for INR bitcoin markets
IRC Web #bitcoin-tickers-jpy	Bitcoin tickers for JPY bitcoin markets
IRC Web #bitcoin-tickers-nzd	Bitcoin tickers for NZD bitcoin markets
IRC Web #bitcoin-tickers-pln	Bitcoin tickers for PLN bitcoin markets
IRC Web #bitcoin-tickers-rub	Bitcoin tickers for RUB bitcoin markets
IRC Web #bitcoin-tickers-sek	Bitcoin tickers for SEK bitcoin markets
IRC Web #bitcoin-tickers-sgd	Bitcoin tickers for SGD bitcoin markets
IRC Web #bitcoin-tickers-sll	Bitcoin tickers for SLL bitcoin markets
IRC Web #bitcoin-tickers-thb	Bitcoin tickers for THB bitcoin markets
IRC Web #bitcoin-tickers-usd	Bitcoin tickers for USD bitcoin markets
IRC Web #bitcoin-tickers-zar	Bitcoin tickers for ZAR bitcoin markets
IRC Web #bitcoin-wot	Distributed Web of Trust (WoT) system for #bitcoin-otc.
IRC Web #btc.chat.traders	Russian community discussion about trades/exchanges.
IRC Web #bitcoinconsultancy	Bitcoin Consultancy discussion
IRC Web ##mtgox-chat	#MtGox chat (Note the pound sign (#) is part of the channel name)
IRC Web #mtgox	MtGox support
IRC Web #mtgoxlive	MtGox Live real-time view of trading
IRC Web #mtgox-news	Mt. Gox topics from Twitter.
IRC Web #mtgox-rt	Mt. Gox real-time tape (executed trades).
IRC Web #bitcoin-rt	Real-time tape (executed trades).
IRC Web #bitcoinica	Bitcoinica trading platform.
IRC Web #intersango	Intersango exchange support
IRC Web #localbitcoins-chat	LocalBitcoins.com exchange support
IRC Web #Coinabul	Coinabul's customer support and news channel. Selling gold and silver for Bitcoin.

Related Communities

Channel	Description
IRC Web #opentransactions	Open Transactions project.
IRC Web #namecoin	Namecoin and the Dot-bit project.
IRC Web #electrum	Electrum, lightweight bitcoin client.
IRC Web #bitcoin-stackexchange	Discussion complementing Bitcoin StackExchange.