ngIRCd is a portable IRC daemon written from scratch. It is easy to configure, supports server links (even with original ircds) and runs on hosts with changing IP addresses (such as dial-in networks). Currently supported platforms are AIX, A/UX, Darwin/Mac OS X, FreeBSD, HP-UX, IRIX, Linux, NetBSD, SunOS/Solaris, and Windows with Cygwin.
Eservices is an advanced tool for administering an IRC network, and a complete set of services including nickserv, chanserv, operserv, and a special universal serv. It is a pseudo server compatible with the P10 protocol and the specification. The main aims are to be highly efficient, user friendly, and extendible.
Bitrats adds D-RATS support to Bitlbee. Messaging is fully supported, but file transfer is not. Bitlbee is a program which connects to instant messaging servers like Jabber (Google Talk) and MSN Messenger but is controlled via any IRC client. D-RATS is software that provides chat and file transfer support on D-STAR radios. D-STAR is a digital communications protocol for radio amateurs. It supports digital voice and slow (1200bps) data transfer in 2m and 70cm amateur bands and faster Ethernet-protocol-based communications in higher frequencies.