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EnglishWhat Is IRC and How Do You Get Started with an IRC Client Like HexChat?
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IRC (Internet Relay Chat) is a text-based chat protocol built on a network of servers, where you connect with a client and join named channels to talk with others. You need a client because IRC itself is just the protocol — the client is the program that connects you to a server, lets you join channels, and displays the conversation. HexChat is a free, open-source, cross-platform IRC client for Windows and Unix-like systems, based on XChat but released completely free on both platforms. This guide covers how IRC is structured, what a client does, and how to get running with HexChat.
How IRC Is Structured
IRC works on a simple three-part model:
- Network — a group of servers that share the same chat space. Examples include Libera.Chat, OFTC, and EFnet. You connect to one network at a time per connection.
- Server — the specific machine on that network you connect to. Networks usually have many servers, and you can pick any of them.
- Channel — a named room on the network, written with a
#prefix (for example,#pythonor#linux). Anyone on the network can join a public channel and read or send messages.
Your identity on IRC is your nickname (nick). Unlike modern chat apps, IRC has no central account system by default — your nick is just a name you claim when you connect. Networks that want to prevent impersonation offer a registration service (commonly NickServ) so you can reserve your nick.
What an IRC Client Does
The client is the software layer between you and the network. It handles:
- Connecting to a server and keeping the connection alive
- Sending your messages and displaying incoming ones
- Managing multiple channels and networks in one window
- Formatting, notifications, logging, and file transfers
HexChat's feature set reflects what a capable client should offer:
| Feature | What it gives you |
|---|---|
| Multi-network with auto-connect, join, and identify | Reconnect to several networks and channels automatically on launch |
| Scripting with Lua, Python, and Perl | Automate responses, add commands, or extend the UI |
| SASL support | Authenticate to the network during connection, before joining channels |
| DCC support | Send and receive files directly between users |
| Spellcheck, proxies | Everyday usability and connectivity through restricted networks |
| Customizable interface, multiple translations | Adjust layout and use the client in your language |
HexChat is fully open source and actively developed, so the code is auditable and the project keeps receiving updates.
Getting Started with HexChat
1. Install the client
Download HexChat from its official site or your system's package manager. On Windows, use the installer from the project's downloads page. On Linux, it is typically available in your distribution's repositories.
2. Enter your nickname
On first launch, HexChat asks for a nickname. Pick one that is not already in use on the network you plan to join. If it is taken, the server will reject it and you will need to choose another.
3. Choose a network and connect
Select a network from the list (for example, Libera.Chat) and connect. HexChat will pick a server on that network and establish the connection. The expected result is a server window showing the message of the day and a status line confirming you are connected.
4. Join a channel
Type /join #channelname in the input box and press Enter. The channel window opens and you can read and send messages. To leave, type /part.
5. Register your nickname (recommended)
On networks that support it, register your nick with NickServ so others cannot use it. The exact command varies by network — check the network's documentation for the registration syntax. Once registered, you can configure HexChat to identify automatically on connect.
6. Set up auto-connect
In HexChat's network list, you can mark a network to connect on startup and add channels to join automatically. Combined with auto-identify, this means launching HexChat puts you straight into your usual channels without manual steps.
Common Beginner Issues
- Nickname already in use — choose a different nick or register yours with the network's nick service.
- Cannot send messages in a channel — some channels are moderated or require registration before you can speak. Read the channel topic for rules.
- Connection drops — IRC connections can time out on unstable networks. Enabling auto-reconnect in the client settings helps.
- SASL vs. NickServ — SASL authenticates you during the connection handshake, which is more reliable than identifying after connecting. If the network supports SASL, prefer it.
- Scripting feels opaque — start with a small Lua or Python script that responds to a single command, then expand. The client's documentation covers the scripting API.
What to Look For in Any IRC Client
If you are comparing clients rather than committing to HexChat, judge them on the same dimensions:
- Cross-platform support — does it run on the systems you use?
- Multi-network handling — can it stay connected to several networks at once?
- Scripting languages — which languages can you extend it with?
- Authentication — does it support SASL and nick registration?
- File transfer — does it handle DCC?
- Licensing and activity — is it open source, and is it still maintained?
HexChat scores well on all of these: it is free for Windows and Unix-like systems, scriptable in Lua, Python, and Perl, supports SASL and DCC, and is fully open source and actively developed.