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, it's advanced anti-flood and anti-spam systems, swear filtering and module support. We are also particularly proud on our extensive online documentation.