Abaixo uma lista de vários sistemas embarcados, open source, para wireless, inclusive vários deles com suporte a placas mãe subcompactas como WRAP, Via e Soekris, entre outras.

m0n0wall
pfSense » Introduction
AstLinux - The Professionals PBX - Home
EMBCop - IPCop on embedded PC’s
fli4l: News
Gentoo Network Appliance for WRAP
Embedded Linux
LEAF — Linux Embedded Appliance Firewall
Main Page - ME2000
LocustWorld :: The Information Revolution - mesh networking hardware and software
http://www.meshnode.org/
NYCwireless : Pebble
Index of /support//dist
Voyage Linux | Home
Linux distribution for servers and embedded devices
WRAP Box