UnrealIRCd is an open-source IRC daemon, originally based on DreamForge, and is available for Unix-like operating systems and Windows. Since the beginning of development on UnrealIRCd c. May 1999, many new features have been added and modified, including advanced security features and bug fixes, and it has become a popular server.

Anope Services is a set of IRC Services designed for flexibility and ease of use. Anope is available in two flavors: Stable and Development. The stable version has been tested for months and is as stable as a rock, while the development version gets new features added constantly and allows you to enjoy the future of services today.

EggDrop is a popular IRC bot and the oldest still being maintained. Eggdrop includes built-in support for sharing user information and channel bans, however a script is required to simultaneously control multiple bots and for bots to coordinate channel management and modes. The bot also features a botnet, which allows multiple bots to be linked together to share data and act in a coordinated fashion. The botnet supports a "party line", which is accessible via DCC CHAT and Telnet. People can communicate within the botnet on various channels in an equivalent to a miniature IRC.
psyBNC is useful for people who cannot be on irc all the time. Its used to keep a connection to irc and your irc client.

ZNC is an IRC network bouncer or BNC. It can detach the client from the actual IRC server, and also from selected channels. Multiple clients from different locations can connect to a single ZNC account simultaneously and therefore appear under the same nickname on IRC. It supports SSL secured connections and IPv6.

The EnergyMech is a UNIX compatible IRC bot programmed in the C language, freely distributable under GNU General Public License (GPL). On this website you can find the largest EnergyMech resource and help library on the Internet.

HOPM (Hybrid Open Proxy Monitor) is an open-proxy monitoring bot designed to monitor an individual server (all servers on the network have to run their own bot if the IRCD does not support `farconnect` user mode) with a local operator {} block and monitor connections. When a client connects to a server, HOPM will scan the connection for insecure proxies. Insecure proxies are determined by attempting to connect the proxy back to another host (usually the IRC server in question).