This page is work in progress!
This is a list of known projects (commercial or non-commercial) which use coreboot / LinuxBIOS.
FSF coreboot-based servers
The One Laptop per Child project used LinuxBIOS in their prototypes (and Open Firmware on top). Now they're using pure OpenFirmware.
See also Laptop.
Linutop is a "Linux-based diskless computer. It offers a completely silent, low-power operation in an extremely small package. Its main purpose is to surf the web". Linutop will at some point come with coreboot pre-installed.
Supercomputing / Clusters
See also Clusters.