"Like DD-WRT, the Tomato firmware can be installed on a variety
of wireless routers. Tomato supports the Linksys WRT54G family,
which also includes the WRT54GS, WRT54GL, and WRTSL54GS. Note that
Tomato will not work with WRT54G routers later than version 4,
since these do not run Linux. The WRT54GL model is always a safe
bet—the "L" stands for Linux!"