Internet Relay Chat is a text-based messaging system where people connect to a server and join channels to chat in real time

Internet Relay Chat, or IRC, is a network protocol that lets people type messages to each other over the internet. Unlike email, which you send and check later, IRC happens live — you type something and others see it when ready. People connect to an IRC server, join a channel (a chat room focused on a topic), and type messages that everyone in that channel can read.

IRC was created in 1988 and became popular in the 1990s and 2000s, especially among software developers, gamers, and people interested in technology. While newer platforms like Discord and Slack have taken over many of IRC's uses, IRC still exists and is used by open-source software projects, hobbyist communities, and people who prefer its simplicity.

Key Takeaways

  • IRC is a text-only messaging system where you connect to a server, join a channel, and see messages from others in real time.
  • You need an IRC client (a program on your computer) to connect; popular ones include mIRC, HexChat, and Irssi.
  • Channels are organized by topic and start with a # symbol, like #python or #gaming, and anyone can create a new channel.
  • IRC has no built-in file sharing, voice, or video — it is text only, which makes it lightweight and fast even on slow internet connections.
  • Many open-source projects and Linux communities still use IRC for real-time discussion and support.

How you connect to IRC and join a conversation

To use IRC, you first read and install an IRC client — a program that connects you to an IRC server. Common clients include HexChat (free, works on Windows, Mac, and Linux), mIRC (Windows, has a trial period), and Irssi (a text-based client for Linux and Mac). Once you open the client, you enter the address of an IRC server you want to join, pick a nickname, and connect.

After you connect, you see a list of channels available on that server. You join a channel by typing a command or clicking its name. Channels are named with a # at the start, like #python, #ubuntu, or #gaming. Once you join, you can see the conversation happening and type your own messages. Everyone in that channel sees what you type when ready.

Channels, operators, and how IRC communities stay organized

Each channel has a topic — some are for discussing a programming language, others for a video game or a local community. The person who creates a channel becomes its operator and can set rules, remove disruptive people, and change the channel's topic description. Operators use commands to manage the channel, like banning someone or setting the channel to read-only mode.

Unlike a social media platform run by a company, IRC channels are decentralized. Anyone can create a new channel on a server, and channels disappear when the last person leaves (unless the server is set to keep them). This means communities have to work together to keep their channels active and moderated. Many channels have multiple operators to share the responsibility.

What IRC does not have that newer chat systems do

IRC is text-only — there is no voice chat, video, or file sharing built into the protocol. If you want to share a file, you have to use a separate tool or upload it somewhere else and paste a link. There is no way to edit a message after you send it, and there is no search function to find old conversations. Once a message scrolls off your screen, it is gone unless someone saved it.

IRC also has no user profiles, no way to see who is online before you join, and no notifications on your phone. If you want to be notified when someone mentions your name, you have to keep the IRC client open and watch the window. These limitations are actually why some people prefer IRC — it is straightforward, lightweight, and does not track you or collect data about your behavior.

Where IRC is still used today

Open-source software projects use IRC heavily. The Linux kernel developers, the Python community, and many other large projects have official IRC channels where people ask questions and discuss code. If you are learning to code or contributing to an open-source project, you may end up in an IRC channel at some point.

IRC is also used by hobbyist communities, retro computing enthusiasts, and people who run their own servers. Some people prefer it because it does not require an account with a company, does not show ads, and does not change its interface every few months. A few gaming communities and music production communities still use IRC as their main chat system.

IRC versus Discord, Slack, and other modern chat platforms

Discord and Slack are newer platforms that do what IRC does but with more features — voice chat, file sharing, searchable message history, and mobile apps. They are easier to set up because you do not have to install a client or understand server addresses. However, they are run by companies, require an account, and collect data about how you use them.

IRC has no central company running it. Each server is independent, and the protocol is open — anyone can build a client or run a server. This means IRC will not disappear if a company shuts down or changes its business model. For communities that value independence and simplicity, IRC is still the better choice. For most casual users, Discord or Slack are more convenient.

How to get your free guide if you want to try IRC

read HexChat or another IRC client, install it, and open it. You will see a window to add a server. Type the address of a public IRC server — Libera.Chat is one of the largest and hosts many open-source projects. Pick a nickname (it does not have to be your real name), connect, and then join a channel. Start with something like #help or #newbies if you are unsure what to do.

Read the channel topic and rules before you type. Most channels have a description at the top that explains what the channel is for. If you have a question, ask it clearly and wait a moment — people may be busy or in a different time zone. IRC communities are usually friendly to newcomers, but they expect you to read the rules and not spam or ask the same question repeatedly.

Frequently Asked Questions

Is IRC safe to use?

IRC itself is not encrypted by default, so messages can be read by your internet provider or network administrator. Many servers now support encrypted connections (look for TLS or SSL options in your client). The bigger risk is the people in channels — use a nickname that does not reveal your real identity, do not share personal information, and be cautious about downloading files from strangers.

Do I need to pay to use IRC?

No. IRC clients are free, and connecting to public servers costs nothing. Some servers may ask for a small donation to cover hosting costs, but you can always use IRC without paying. If you want to run your own IRC server, that costs money for hosting, but joining existing servers is completely free.

Can I use IRC on my phone?

Yes, but it is not as convenient as Discord or Slack. Apps like Palaver and AndChat let you connect to IRC from Android or iPhone, but they are not as polished as modern chat apps. Most IRC users stick to desktop clients because the experience is better.

What happens if I get disconnected?

You lose your connection to the channel and drop out of the conversation. When you reconnect, you will not see the messages that were sent while you were offline. Some IRC clients can log messages to a file so you can read them later, but this is not automatic.

Can I create my own IRC channel?

Yes. When you join a server, you can create a new channel by typing a command in your client. You become the operator of that channel and can invite others to join. However, if everyone leaves the channel and it stays empty, the server may delete it after a period of time.