ip_relay can shape the TCP traffic forwarded through it to a specified bandwidth and allow this specified bandwidth to be changed on-the-fly. Multiple data streams to different hosts/ports may be shaped to the same total bandwidth, much like a traffic shaping router would; however, this application runs in user space, and works by acting as a TCP proxy.
ir is an interface program to Chris Dodge's RedRat 2 infrared controller to send and receive infrared signals to/from consumer devices like TV's, VCR's, cable boxes, and stereos. It will not work with any other IR tranceiver, like IrDA. It is written in Perl. It uses only the basic Perl constructs and no external packages, so it should work on any platform that supports Perl and serial communications. It can be accessed via the command line or cron, as an email handler (through aliases), or as a cgi script which will automatically generate a form with all possible codes. It has macro capability so one command can send a series of IR signals. With an X-10's IR543, it can be used to control X10 devices, too.
IRCtl is a LIRC-compatible driver for the IR remote control in the FlyVideo98 TV card. There is always a newest version of this driver in the Lirc CVS tree. It is a patch against kernel bttv driver plus loadable lirc driver module. The kernel patch also enables support of the FV98 card in the kernel bttv driver.
ircbase allows you to establish a persistent IRC server connection on any UNIX box with 24/7 day connectivity much like an advanced bot, then attach to it from any machine to allow control of it and use it much like a normal IRC client. ircbase has advanced scripting capabilities (including optional Python support) and is intended to be able to fully replace bots and ircbouncers, as well as provide an advanced IRC platform, which can fully support any GUI.
IrNET is a protocol allowing to carry TCP/IP traffic between two IrDA peers in an efficient fashion. It is a thin layer, passing PPP packets in a IrTTP socket. It uses PPP in synchronous mode for efficiency, and offers lots of flexibility and various features. The main part of IrNET in included in kernel 2.4.x, and a user-space daemon (to automate connections) is available on the web page.