CodeGen, Inc.
   Makes SmartFirmware, a portable, easily customized ANSI C implementation of IEEE-1275 Open Firmware standard. Designed to be very easy and fast to port. Demonstration version download.
   http://www.codegen.com/SmartFirmware/

FirmWorks
   O-F products, services, documentation, training. The industry champion and leading provider. Invented the technology, and lead development of the IEEE 1275-1994 standard. Field proven, written in Forth.
   http://www.firmworks.com/

Open Firmware
   Growing article, with links to many related topics. Wikipedia.
   http://en.wikipedia.org/wiki/Open_Firmware

Open Firmware Working Group
   O-F is processor and system independent boot code: firmware. Read about O-F, the Working Group; several related documents; several links to mirror sites, Forth, vendors, documentation, news, and proposals.
   http://playground.sun.com/1275/

OpenBIOS
   To be free, portable BIOS implementation, 100% IEEE 1275-1994. PCs have had BIOSes since the start. Since then, most have been DOS-specific, 16-bit, and real-mode, not something a modern OS such as Linux, BSD, or Hurd can use.
   http://www.freiburg.linux.de/OpenBIOS/

OpenFirmware.org
   Brief description, links to software and system makers.
   http://www.openfirmware.org/

What is Open Firmware?
   O-F is done in Forth.
   http://www.firmworks.com/www/ofw.htm