What is UnrealIRCd?
UnrealIRCd is an Open Source IRC Server, serving thousands of networks since 1999. It runs on Linux, OS X and Windows and is currently the most widely deployed IRCd with a market share of over 50%. UnrealIRCd is a highly advanced IRCd with a strong focus on modularity, an advanced and highly configurable configuration file. Key features include SSL, cloaking, its advanced anti-flood and anti-spam systems, swear filtering and module support. We are also particularly proud on our extensive online documentation.
UnrealIRCd 4.0.8.4 released
by Syzop on Nov 18, 2016, 16:00 CET
There have been a number of point releases to fix possible compile problems. If you already successfully installed UnrealIRCd then there is no need to upgrade. The Windows version is unchanged (4.0.8). (Read more)
UnrealIRCd 4.0.8.1 released
by Syzop on Nov 14, 2016, 11:30 CET
The *NIX download has been replaced with 4.0.8.1. This version fixes a problem if using a self-compiled curl from your home directory. It also fixes a compile problem on FreeBSD if using clang. These issues only affect a small number of users. If you already successfully installed UnrealIRCd then there is no need to upgrade. The Windows version is unchanged (4.0.8). (Read more)
UnrealIRCd 4.0.8 released
by Syzop on Nov 11, 2016, 09:30 CET
UnrealIRCd 4.0.8 enables several hardening options by default on *NIX to make several type of exploits more difficult and in some cases impossible. On Windows releases are now signed by default. (Read more)
Keep up to date
Get notified via email about new UnrealIRCd releases and important announcements. No spam. This is a low-volume mailing list with only one message every 1-2 months. You can subscribe here.
UnrealIRCd 4.0.8-rc1 released
by Syzop on Oct 30, 2016, 14:15 CEST
UnrealIRCd 4.0.8-rc1 is the (first) release candidate for upcoming 4.0.8. (Read more)
Windows: UnrealIRCd releases now digitally signed
by Syzop on Oct 19, 2016, 14:30 CEST
From now on our Windows UnrealIRCd 4.x releases are signed with signtool. If you run the installer the publisher will show as "Open Source Developer, Bram Matthys" rather than "Unknown publisher". Not only the installer itself is signed, also all .EXE and .DLL files which are installed. (Read more)
UnrealIRCd 4.0.7 released
by Syzop on Oct 9, 2016, 10:00 CEST
UnrealIRCd 4.0.7 has been released. SSL/TLS security has been strengthened and an issue preventing SSL server linking on FreeBSD has been resolved. For a more detailed list of changes... (Read more)
UnrealIRCd 4.0.7-rc1 released
by Syzop on Oct 1, 2016, 16:00 CEST
UnrealIRCd 4.0.7-rc1 is the (first) release candidate for upcoming 4.0.7. (Read more)
Security: SASL security issue (UnrealIRCd 4.0.6 & 3.2.10.7 released)
by Syzop on Sep 3, 2016, 21:45 CEST
A security issue was detected in a number of IRCd's, including UnrealIRCd. If you use services and have SASL enabled (you need to do this explicitly) then you should patch or upgrade as soon as possible. While this only affects 2% of our userbase, for those networks which are affected this is a very serious issue. (Read more)

UPDATE: You can use our online security check to see if your server is vulnerable or not!
UnrealIRCd 4.0.5 download replaced
by Syzop on July 28, 2016, 19:45 CEST
There was a problem with the 4.0.5 download where it killed innocent users. The download has now been replaced with a fixed version. This only affected 41 people / 28 unique IP's who downloaded the early 4.0.5 version with the bug. Automated tests failed to detect this problem. Sorry for the trouble!
UnrealIRCd 4.0.5 released. Fixes security issues.
by Syzop on July 28, 2016, 16:00 CEST
UnrealIRCd 4.0.5 has been released today. We recommend everyone to upgrade to this version as it fixes some serious issues. (Read more)
UnrealIRCd 4.0.4 released
by Syzop on June 26, 2016, 20:00 CEST
As you may have found out by now we have a new release policy where we try to push out a new 4.0.x release at least every 2 months. This UnrealIRCd 4.0.4 release addresses a small GLINE/KLINE bug, two rare crashes and a few minor issues. (Read more)
Stay informed on new releases and security fixes
by Syzop on May 22, 2016, 11:30 CEST
If you are using UnrealIRCd then we highly recommend you to subscribe to our unreal-notify mailing list. This low-volume mailing list consists solely of new release announcements and project news, typically 6-8 messages per year.
Subscribing not only keeps you informed on the latest changes but also makes sure you don't miss out on security announcements.
UnrealIRCd 4.0.3.1 (for FreeBSD/OpenBSD)
by Syzop on April 24, 2016, 10:30 CEST
The *NIX/Source download has been replaced with 4.0.3.1. This version only fixes a compile problem on FreeBSD and OpenBSD. If you are using Linux or Windows then there's no reason to upgrade. (Read more)
UnrealIRCd 4.0.3 released
by Syzop on April 16, 2016, 12:30 CEST
This release fixes a crash which can be triggered by IRCOps only (not by regular users). It also fixes a few issues on Windows and improves the crash reporter. (Read more)
UnrealIRCd 4.0.3-rc1 released
by Syzop on April 4, 2016, 16:30 CET
This release fixes a few crash bugs and improves the crash reporter. We also changed the way the Windows version is built. This is a release candidate. If no major issues show up this will soon become 4.0.3. (Read more)
UnrealIRCd 4.0.2 released
by Syzop on March 11, 2016, 17:25 CET
This release addresses a number of minor issues in the UnrealIRCd 4 series. (Read more)
UnrealIRCd 4.0.1 released
by Syzop on January 15, 2016, 18:00 CET
This release fixes 2 crash issues: one if you removed an active listen { } block and the other could hapen on-link. It also fixes a number of smaller issues and adds some improvements to UnrealIRCd 4. (Read more)
UnrealIRCd 4.0.0 released
by Syzop on December 24, 2015, 19:00 CET
UnrealIRCd 4 is here! We have been working hard over the past few years to replace the successful but aging 3.2.x series with a more modern code base. At the same time we have implemented suggestions from... (Read more)
UnrealIRCd 4.0.0-rc6 released
by Syzop on December 16, 2015, 13:40 CET
The 6th - and possibly last - release candidate for UnrealIRCd 4 is now available for download. (Read more)
UnrealIRCd 3.2.10.6 released & deprecation of 3.2.x series
by Syzop on December 11, 2015, 11:00 CET
UnrealIRCd 3.2.10.6 has been released today to address a possibly user-triggerable crash issue in the Windows SSL version. At the same time we are announcing the phase-out of the 3.2.x series (Read more)
UnrealIRCd 4.0.0-rc5 released
by Syzop on December 9, 2015, 20:15 CET
The fifth release candidate for UnrealIRCd 4 is now available for download. (Read more)
UnrealIRCd 4.0.0-rc4 released
by Syzop on November 25, 2015, 19:30 CET
The fourth release candidate for UnrealIRCd 4 is now available for download. (Read more)
UnrealIRCd 4.0.0-rc3 released
by Syzop on November 8, 2015, 10:50 CET
The third release candidate for UnrealIRCd 4 is now available for download. (Read more)
UnrealIRCd 4.0.0-rc2 released
by Syzop on October 26, 2015, 15:00 CET
The second release candidate for UnrealIRCd 4 is now available for download. (Read more)
UnrealIRCd 4.0.0-rc1 released
by Syzop on October 11, 2015, 18:00 CEST
The first release candidate for UnrealIRCd 4 is available for download. The development version was previously called 3.4.x but has been renamed to indicate the many changes in the codebase and to end-users. We're still aiming for an UnrealIRCd 4.0.0 stable release by the end of 2015. (Read more)
UnrealIRCd 3.4-beta4 released
by Syzop on September 7, 2015, 13:50 CEST
This release fixes a number of major bugs and adds some security enhancements. (Read more)
UnrealIRCd 3.4-beta3 released
by Syzop on August 16, 2015, 16:00 CEST
We have also released a new beta for the 3.4 series. 3.4-beta3 finally introduces IPv6 support on Windows XP and fixes a number of major bugs and compile problems. (Read more)
Security: UnrealIRCd crash issue if SASL is enabled
by Syzop on August 16, 2015, 15:10 CEST
If SASL support is enabled in UnrealIRCd (this is not the default) and is also enabled in your services package then a malicious user with a services account can cause UnrealIRCd to crash. Most people have not enabled SASL, and those who do can easily fix this potential crash issue without a server restart. See the security advisory for more information.
UnrealIRCd 3.4-beta2 released
by Syzop on July 23, 2015, 16:00 CEST
The second BETA version for UnrealIRCd 3.4.x has been released. This fixes a bunch of major bugs in the first beta that came up during testing. (Read more)
UnrealIRCd 3.4-beta1 released
by Syzop on July 14, 2015, 18:30 CEST
After more than 2 years of development I'm happy to announce the first BETA version of UnrealIRCd 3.4.x. This means we are on schedule to deliver an UnrealIRCd 3.4 stable release by Q4 this year. (Read more)
UnrealIRCd 3.4-alpha4 (development) released
by Syzop on June 27, 2015, 18:00 CEST
And another 3.4.x alpha version has been released. This time the oper privilege system received a complete makeover, allowing you to grant/restrict oper privileges in a very fine matter. Also even more things have been moved to modules. (Read more)
Security: DoS in OpenSSL affecting UnrealIRCd (again)
by Syzop on June 11, 2015, 17:50 CET
Several security issues were found in the OpenSSL library. The OpenSSL library is used by UnrealIRCd if you compiled with SSL support. Several of these issues result in a server crash (Read More)
UnrealIRCd 3.4-alpha3 (development) released
by Syzop on June 10, 2015, 14:00 CEST
Development of 3.4.x is going well! Previous alpha version was released only a month ago but all the changes since then warrant a 3.4-alpha3 release. In 1-2 months we plan to move 3.4.x to 'beta' stage so we can have a 'stable' release by the end of this year (2015). (Read more)
UnrealIRCd 3.4-alpha2 (development) released
by Syzop on May 19, 2015, 18:00 CEST
The second alpha version for UnrealIRCd 3.4 has been released. I've worked on this together with Heero and we also had a number of contributions from Adam, DBoyz and others. Thanks everyone! ... (Read more)
UnrealIRCd (development) wiki is up
by Syzop on May 18, 2015, 13:00 CET
In the past month me (Syzop) and Heero have been writing technical documentation which should be very useful to Module Coders. If you thinking about writing UnrealIRCd modules or already have some experience with it, have a look at the development documentation wiki.
Security: DoS in OpenSSL affecting UnrealIRCd
by Syzop on March 19, 2015, 21:24 CET
Several security issues were found in the OpenSSL library. The OpenSSL library is used by UnrealIRCd if you compiled with SSL support. At least one issue is a server crash (Read More)
UnrealIRCd 3.4-alpha1 (development) released
by Syzop on July 26, 2014, 20:30 CET
The very first alpha of the new UnrealIRCd 3.4 series has been released. This version contains major enhancements but is not stable yet. Hopefully some users want to help us with testing. Just don't run it on a production server! (Read More)
UnrealIRCd 3.2.10.4 (stable) released
by Syzop on July 26, 2014, 20:30 CET
A minor update for the 3.2.x stable series has been released. This release fixes a compile problem on FreeBSD and other OS's where clang is the default compiler. Also some minor problems with newer services such as anope 2.0 have been fixed (Read More)
UnrealIRCd 3.2.10.3 released
by Syzop on May 31, 2014, 21:30 CET
Another update to latest stable release is out: 3.2.10.3. This release consists mostly of a few bug fixes. There's no need to update existing servers unless you are experiencing problems or if you are using SASL and have ping-cookie disabled (neither is the default). (Read More)
UnrealIRCd celebrates its 15th birthday!
by Syzop on May 18, 2014, 19:00 CET
It all started when Stskeeps created UnrealIRCd in May 1999. When I first joined the project as a coder in 2001 UnrealIRCd was already very popular. Now, in 2014, it is still the most widely deployed IRCd with a market share of over 50% (Read More)
New website
by Syzop on May 18, 2014, 18:45 CET
We finally have a new website! With our 15th anniversary we really needed something new. I'd like to thank n0kS for all his hard work on this and hope everyone (or almost everyone) appreciates the new design.
If you are missing something or are experiencing any errors, then let us know.
Security advisory: SSL Heartbeat & UnrealIRCd
by Syzop on April 8, 2014, 18:30 CET
A serious issue in OpenSSL was reported yesterday, the so called 'Heartbleed' bug. It affects many applications, including UnrealIRCd. It's very serious because it gives remote users the ability to read highly sensitive data. UPDATE: we now suggest users to create a new SSL Certificate & keys too! (Read More)
UnrealIRCd 3.2.10.2 released
by Syzop on November 23, 2013, 11:22 CET
We have released a second update to latest stable: UnrealIRCd 3.2.10.2. We recommend 3.2.10 & 3.2.10.1 users to upgrade somewhere in the next few weeks. (Read More)
UnrealIRCd survey - give your feedback!
by Syzop on August 17, 2013, 11:25 CET
We've launched an UnrealIRCd survey at survey.unrealircd.com. The purpose of this survey is to give us a good idea of how people think about UnrealIRCd, how it's being used, and - even more important - in what areas we should improve. The results of the survey will help us decide where to work on, mainly with regards to the development of the new Unreal3.4.x series, but also in other areas. (Read More)
UnrealIRCd 3.2.10.1 released
by Syzop on April 5, 2013, 17:25 CET
I've released an update to latest stable release. There were a few issues in 3.2.10 that couldn't wait until a 3.2.11 release. Note that if you are not experiencing any of these issues then there isn't much reason to upgrade!
Here's the list of issues that are fixed since 3.2.10... (Read More)
UnrealIRCd 3.2.10 released & UnrealIRCd 3.4 development
by Syzop on December 25, 2012, 10:55 am CET
First of all, Merry Christmas everyone! Today we have released UnrealIRCd 3.2.10. This release contains quite a number of new features and also a couple of bug fixes for minor issues. For a summary of the changes, see the Release Notes below. I would also like to announce that we have started development on UnrealIRCd 3.4... (Read More)
Security: Crash issue in UnrealIRCd Windows SSL versions 3.2.9 and 3.2.10-rc1
by Syzop on November 12, 2012, 15:13 am CET
A serious issue has been found in the Windows SSL versions of UnrealIRCd 3.2.9 and 3.2.10-rc1. This issue allows someone to remotely crash the server. This issue does not affect *NIX users or Windows users using the non-SSL version. See the security advisory for more information.
UnrealIRCd 3.2.10-rc1 released for testing
by Syzop on October 17, 2012, 11:46 am EDT
I've released UnrealIRCd 3.2.10-rc1 (Release Candidate 1) for testing today.
Everyone is welcome to test this version and check if there are any major release critical bugs (such as crash bugs) present, so they can be corrected before the real 3.2.10 release. Note that we do not recommend running this version on production servers.
You can download 3.2.10-rc1 by clicking on the the Downloads link on the left side of this page.
You can help us by testing specific items which can be found on our the Unreal3.2 testing forum. Be sure to read the first post 'READ THIS! (how to use)'.

Summary of the new features and fixes: ... (Read More)