Firmware Comparison

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This is work in progress!

There are a lot of (Free Software, as well as proprietary) firmware implementations available these days, which can be very confusing. This page tries to give an overview.


License: GPLv2.


This project is dead and was merged into coreboot. Use coreboot instead. License: GPLv2.


Open Firmware IEEE 1275-1994 implementation. Kernel and some modules are written in C. Large parts of the code base is written in Forth. License: GPL.


"The original" Open Firmware IEEE 1275-1994 implementation was open sourced in 2006/2007 by Mitch Bradley. License: BSD.


Open Firmware IEEE 1275-1994 implementation completely written in ANSI C. Features a C to FCode compiler.


SUN's "fork" of Open Firmware.


Very wide spread firmware, mostly used on ARM, PPC and MIPS based embedded systems, but not so much for x86 systems. Features a small shell.


Umbrella name for several firmware implementations implementing the EFI/UEFI interface.

Tiano Core

UEFI based bootloader.