"OpenWrt, the GPLed Linux distribution for wireless routers, is at RC4 and is nearing the 1.0 release. We looked at RC2 last August, but things have changed since then--for the better.
"The biggest change is probably the addition of webif, the Web-based Admin Console that lets you install and remove packages with a click or two. There are more applications available for OpenWrt almost every day, and RC4--based on the official 2.4.30 kernel sources--now runs on routers from 23 different manufacturers..."