SeaBios
SeaBIOS is an open source implementation of a 16bit X86 BIOS. SeaBIOS can run in an emulator or it can run natively on X86 hardware with the use of coreboot.
U-Boot
The "Universal Bootloader" ("Das U-Boot") is a monitor program. Free Software: full source code under GPL hosted on SourceForg ...
XTIDE Universal BIOS
XTIDE Universal BIOS makes it possible to use modern large ATA hard disks or Compact Flash cards on old PC's. You can then enj ...
Libreboot
Like coreboot, libreboot is boot firmware intended as a free 'BIOS' replacement for your computer. 'Libre' means 'liberty'. Li ...
coreboot
coreboot (formerly known as LinuxBIOS) is a free software project aimed at replacing the proprietary BIOS firmware found in mo ...