Here you will find a list and short description of other NES sites. If you would like your site added feel free to email me and I will most likely add it.
Nes World
The greatest NES site you will find, one of the first dedicated NES sites on the net. Nes World has been around over eight years now and is bigger and better than ever.

It also has a active message board where I am admin. :)
TheRedEye
This site has some great in depth looks at prototypes that have been dumped showing graphics variations etc. Probable wont be updated much anymore now Lost Levels is open for business.
Smackdown GT
Back from the dead, a very funny and original site.
Nespit
Small site run by Niels a dutch collector, it includes pictures of prototypes, test cartridges a gold NWC cartridge and some other rare stuff from his collection.
Digital Press
I mostly just browse digital press for it's very active message board. It also has a large database covering games for all systems including rarity, very useful.
Nesplayer

Great site with excellent shines and reviews this site is one of my favorites well worth checking out.

Famiclone

A site dedicated to bootleg Famicom games and systems, it's british too. :)

All the sites that are gone but not forgotten. If your sites here and has been resurrected feel free to email me and I'll move it.
|tsr's Archive
Very nice site one of the largest it's got pretty much everything. Reviews, interviews, scans of every US released title and lots lots more.