Monitor Your Systems With FreeIPMI - Interview w/ Albert Chu about FreeIPMI (Aug 6, 2007) (Original article now offline, interview text can be read here)
Intel IPMI Page - Homepage for IPMI specifications.
Other IPMI projects
Conman - Remote console aggregator. Supports IPMI via FreeIPMI's ipmiconsole and libipmiconsole.
Powerman - Remote power control (RPC) aggregation utility. Supports IPMI via FreeIPMI's ipmipower.
Ganglia - A popular host monitoring software. FreeIPMI plugin available in downloads.
Nagios - A popular host monitoring software. FreeIPMI plugin available in downloads.
Network UPS Tools (NUT) - Supports IPMI monitoring of power supplies via libfreeipmi and libipmimonitoring.
Writeups from other FreeIPMI users
BMC: Change Temperature Thresholds
freeipmi *-config tools primer
Enable IPMI Over LAN from the OS using FreeIPMI