When I've been searching for You know you've played too much worms when... threads, I came upon Paul.Power's old site, and remembered when I was into playing worms offline I used to love it. Then I went to his links page and found more sites that are actually still online! I've listed them below. And by retro ones, I mean from the time before 3D (if they cover 3D it should be only slightly) and before WN was dominated by ropers.

Sites I found:
http://www.varley9.freeserve.co.uk/wormposs/ (Mission WORMPOSSIBLE)
http://biphome.spray.se/boggy_b/ (Servadec's Ultimate Worms Page)
http://www.strategyplanet.com/worms/ (Wormiverse (gamespy still haven't shut it down))
http://www.angelfire.com/apes/wormdimensions/Worm_Dimensions.html (Worm Dimensions (not really about the series and horribly broken but oh well))
http://supremesuper.tripod.com/WormZone/Eng/ (SupSuper's WormZone (flash wormsong picker still online! Flash menu broken tho))
http://www.angelfire.com/games4/striker_002/index.html (Worm Fortress)
http://www.stormloader.com/wfd/ (Worms for dummies (nav bar is a bit messed up for me but useable))
http://www.yoda.arachsys.com/worms/wa/ (WA Page of light - many people know of this one from the anims)
http://www.worms2.net.tc/ (Reaperz worms 2 site - still active)
http://www.geocities.com/leadermagikarp/dsr-mainpage.html (Disciples of Destruction (a bit lacking in content))


That's pretty much all I can find. Anyone see any more please post them here and I'll add them if so.

www.geocities.com/leadermagikarp/dsr-mainpage.html

The second or third clan I was ever in.

Only thing worth mentioning are the sigworms I guess, I liked the old style better, when they were based on actual game sprites. They were stolen from various people ftr.

Added :)

Hmmm, maybe Blame the pixel?

http://www.blamethepixel.com/

Bit well-known, and stuff.

http://us.geocities.com/cal_fin/

Ancient maps. Quite epic.

An even older site of Jon Skeet's is here: http://www.yoda.arachsys.com/worms/

http://www.angelfire.com/az2/eliteleveldesigns/
http://sheepwars.8m.com/

Several versions of Wormsmart:
http://www.geocities.com/SiliconValley/Program/4567/
http://maz.me.uk/wormsmart/ (current)

More links:
http://www.angelfire.com/nd2/worms/links.htm

http://supremesuper.tripod.com/WormZone/Eng/ (SupSuper's WormZone (flash wormsong picker still online! Flash menu broken tho))Man, that site has been through hell and back, I can't believe Tripod still keeps it around.

Since you reminded me of that old thing, I might as well show something I never finished, something that's been abandoned in my hard disk for ages, something that has never seen the light of day before:
http://i6.photobucket.com/albums/y237/supsuper/wormzone2.png

There's also Not a Clan, the clan that wasn't really a clan. Seriously! http://supremesuper.tripod.com/NAC/

http://www.clansfx.co.uk is still up, and looking much like it did in 2002