OT: Anyone know of a SBC comparison site?

I realise that this is not really a Beagle question, but I hope that this
community might know that answer to my question.

From time to time I need to find a board with particular characteristics,
say three ethernet ports, which is something that none of the beagles can
do. The OpenWRT site has some of these, but does not then list some of the
other things like the GPIO/ADC/PWM pins.

Is anyone maintaining such a site? If so does anyone have a URL, if not
would it be useful to others?