IRC (Internet Relay Chat) Explained: History, Future, and How It Compares to Discord and Slack
What This Article Covers
- What IRC is and how the protocol works technically.
- The history from 1988 to today, including the major exodus to Discord and Slack.
- Why IRC is experiencing a quiet renaissance in 2026 and what IRCv3 modernizes.
- An honest comparison: IRC versus Discord, Slack, Matrix, and Telegram.
- When IRC makes sense and when you’re better off elsewhere.
Introduction: The Grandfather of Chat Is Still Alive
Before Discord. Before Slack. Before ICQ chimed. There was IRC. Internet Relay Chat is the oldest active chat protocol on the internet, created in 1988 by Finnish developer Jarkko Oikarinen. It has survived wars, the dotcom crash, the entire social media era, and multiple premature obituaries.
And IRC refuses to die. After major communities migrated to Discord and Slack in the 2010s, something interesting is happening now: developers, open-source projects, and privacy advocates are returning. Not out of nostalgia, but because IRC solves problems that modern platforms created.
This article explains what IRC is, where it came from, where it’s headed, and how it stacks up against today’s chat systems. Because BotServ.de comes from this world, you’ll find the best German-language IRC resources at the end, many of which have existed for over 25 years.
What Is IRC? The Protocol in Brief
Internet Relay Chat is a text-based real-time chat protocol built on a client-server model. You connect with a client (mIRC, HexChat, The Lounge, irssi, WeeChat) to an IRC server, join channels, and chat with other users.
Key characteristics:
- Open protocol: IRC is standardized in RFC 1459. Anyone can write a client or server. No company controls it.
- Network topology: IRC servers connect into networks (Libera.Chat, OFTC, IRCnet, EFnet, Rizon, and many smaller ones). A channel exists network-wide across all servers.
- Text-based: No ads, no tracking, no algorithm. The protocol sends plain text lines. You can even follow it live in a terminal.
- Minimal: An IRC client uses almost no resources. A complete network runs on a Raspberry Pi.
That’s it. No forced registration (Services are optional), no app store, no twelve-page terms of service. Connect, join a channel, start typing.
Internet Relay Chat History: 1988 to Today
1988 to 1995: The birth. Oikarinen builds IRC at the University of Oulu as a replacement for BBS systems. Within a few years it grows worldwide. In 1991 it becomes a news source during the Soviet coup attempt. In 1994 it’s used during the California earthquake. IRC becomes a real-time news channel long before Twitter exists.
1995 to 2005: The golden age. IRCnet and EFnet explode in size. mIRC becomes the standard Windows client. Eggdrop bots keep channels clean. Services like NickServ and ChanServ professionalize the networks. Anyone online back then was chatting on IRC. Gaming clans, hacker communities, channels for everything. The largest networks sometimes had over a million concurrent users.
2005 to 2015: The long goodbye. Web chats arrive, then Facebook, then Discord and Slack pull the masses away. In 2021 the Freenode scandal hits, the largest network collapses overnight, and the open-source world migrates to Libera.Chat. Many write IRC’s eulogy.
2015 to today: The quiet renaissance. IRC doesn’t die, it specializes. Libera.Chat becomes the home of open-source communities. OFTC remains stable. Ergo brings modern features. IRCv3 modernizes the protocol itself with message history, away notifications, and SASL.
IRC in 2026: What Has Changed
Modern IRC is no longer the protocol from 1993, and that’s something many people miss:
- IRCv3 extensions: Message history, server time, SASL authentication, typing notifications, and more. Clients adopt what they need.
- Ergo IRCD: A modern server with built-in Services, message history storage, and persistent logins. Essentially IRC with Slack-like comfort but without a central corporation.
- Bouncers and web clients: With The Lounge, ZNC, or Soju you stay permanently online and read messages on demand. A major IRC drawback from the past is solved.
- Bot ecosystem: From classic Eggdrops to AI agents responding in channels. See our chatbot article for details.
The direction is clear: IRC becomes lean, self-directed infrastructure for communities that don’t want platform lock-in. Less mass, more substance.
Comparison: IRC vs. Discord, Slack, and Modern Chat Systems
| Criterion | IRC | Discord | Slack | Matrix |
|---|---|---|---|---|
| Owner | None, open protocol | Discord Inc. | Salesforce | Protocol (Matrix.org Foundation) |
| Central servers | No, distributed networks | Yes | Yes | Federated |
| Privacy | Minimal data, no tracking | Extensive data collection | Enterprise privacy | Good, but complex |
| History without account | No (except Bouncer/Ergo) | Yes | Yes | Yes |
| Multimedia | Text, links, DCC transfer | Voice, video, screen sharing | Voice, video, integrations | Voice/video via Jitsi |
| Self-hosting | Yes, trivial | No | No | Yes, complex |
| Bots | Eggdrop, custom bots, Services | Bot API, very powerful | Workflow apps | Bridges and bots |
| Resource usage | Minimal | High (Electron) | High | Medium |
| Learning curve | Commands required | Instant | Instant | Medium |
| Offline history | Only with Bouncer/Ergo | Always available | Always available | Always available |
The honest take: Discord wins on features, multimedia, and ease of use. IRC wins on control, speed, privacy, and longevity. Your Discord server belongs to Discord. Your IRC network belongs to you, and a channel from 30 years ago still runs on the same protocol version today. Try that with a Slack workspace from 2015.
Who Should Use IRC Today?
- Open-source projects: Libera.Chat and OFTC remain the de facto standard for project channels.
- System administrators and homelab enthusiasts: Want your own chat without someone else’s cloud? Ergo gets you a working network in 30 minutes.
- Bot builders: IRC is the perfect playground for chatbots, logging, automation, and AI integrations. See IRC-Coding.de.
- Privacy advocates: No tracking, no algorithm, minimal data collection.
- Curious learners: If you want to understand how chat and network protocols actually work, you’ll learn more from an IRC server than from any Discord tutorial.
Key Terms in Internet Relay Chat
- IRCD (IRC daemon) - The server software running an IRC network. UnrealIRCd, InspIRCd, Ergo, and Hybrid are the major implementations.
- IRC Services - Pseudo-servers like NickServ, ChanServ, and BotServ that handle nickname registration, channel management, and bot hosting.
- IRC commands - From /join to /msg OperServ: the command language that controls IRC.
- Channel - A chat room, starting with #. #linux is understood worldwide.
- Operator - Channel and network admins with kick, ban, and management privileges.
- Bouncer (BNC) - A proxy that keeps you permanently online and stores message history.
- Eggdrop - The classic IRC bot since 1993, scriptable in Tcl and still widely deployed.
Common Pitfalls When Getting Started With IRC
Hearing that “IRC is dead” and believing it. Not true. It’s smaller and more specialized now, but Libera.Chat hosts tens of thousands of active users daily and countless active project channels.
Expecting message history without it. Without a bouncer or Ergo server, you only see what arrives after you connect. This is the most common reason newcomers think IRC feels empty. Set up The Lounge or ZNC.
Picking the wrong network. Communities cluster by network: Libera.Chat for open source, EFnet for the old guard, Rizon for anime and beyond. Without the right channel on the right network, IRC feels abandoned.
Not registering your nickname. Without NickServ, anyone can steal your nick. Register with the services using the guide in our IRC Services article.
The Best IRC Resources Online
BotServ.de has IRC in its DNA, so here’s a curated list rather than rehashed content:
- IRC-Mania.de - The primary source for IRC content in German: over 25 years of experience, hundreds of articles, tutorials, links, workshops, and how-tos. Hard to find a more complete learning resource.
- IRC-FAQ.de - Quick questions, compact answers to countless IRC topics. Your quick-reference handbook.
- IRC-Coding.de - Over 500 articles covering coding, Eggdrops, IRC bots, chat clients, and AI topics like Vibe Coding.
- IRC-Security.de - Cybersecurity and Internet Relay Chat: DDoS mitigation, server hardening, network security.
- IRC-FAQ.com - International IRC FAQs in English.
FAQ: Internet Relay Chat - Common Questions
What is IRC in simple terms?
IRC (Internet Relay Chat) is the oldest active chat protocol on the internet, dating from 1988. You connect with a client to a server, join channels, and chat in real time, completely free from central corporations, ads, or tracking.
Does IRC still exist?
Yes, and it’s actively used. Networks like Libera.Chat and OFTC host tens of thousands of users daily, and channels for nearly every major open-source project. The overall user base is smaller than it once was, but the technical community is more concentrated.
What’s the difference between IRC and Discord?
Discord is a commercial service with voice, video, and convenience, but also central control and data collection. IRC is an open protocol: you can run your own servers, nothing gets tracked, and a channel belongs only to its community.
Which IRC client is the best?
Beginners: The Lounge (web browser, message history included) or HexChat. Advanced users: WeeChat or irssi in the terminal. Windows classic: mIRC. Mobile: Revolution IRC or IRCCloud.
Does IRC cost anything?
No. The protocol, clients, and network access are all free. Some bouncer or webchat services offer premium options, but you can run your own bouncer on a Raspberry Pi or VPS for cheap.
Is IRC secure?
The protocol itself is simple, but unencrypted by default. Use port 6697 with SSL/TLS, register your nick with NickServ, and follow the hardening tips at IRC-Security.de. Our article on IRC Cybersecurity Defense goes deeper.
What is IRCv3?
A working group modernizing the old protocol: message history retrieval, better authentication via SASL, typing indicators, and more. Clients and servers supporting IRCv3 feel like modern chat apps.
Can I run my own IRC server?
Yes, and it’s easier than you’d think. With Ergo or UnrealIRCd, you can have a server running in under an hour. Details in our article on IRC Daemons and Servers.
What are IRC Services?
Services like NickServ, ChanServ, MemoServ, and BotServ are pseudo-servers handling registration, channel management, and bot functions. See our page on IRC Services.
Why learn IRC in 2026?
Because it teaches you how chat infrastructure actually works: protocols, servers, bots, automation. That knowledge applies directly to modern chatbots and AI agents. Plus, you own your own infrastructure there.
Sources and Further Reading
- IRC-Mania.de - The largest German-language IRC knowledge base
- RFC 1459 - The original protocol specification
- Libera.Chat - The network at the heart of open source
- IRCv3 - Protocol modernization
- Wikipedia: Internet Relay Chat