official sites
BBC: Doctor Who
CBC: Doctor Who
SFC: Doctor Who
TV.com: Doctor Who
TWoP: Doctor Who

official tie-in sites
whoisdoctorwho.co.uk
U.N.I.T
GeoComtex.net
Bad Wolf
British Rocket Group: Guinevere Project
Cybus Corporation

doctor/rose fan sites
Abandon Innocence
Barcelona
Doctor + One

fan fiction
A Teaspoon and an Open Mind
Flexible
Fanfiction.net
Fans of Ninth

doctor who fan sites
Outpost Gallifrey
The Mind Robber
21st Century Doctor Who
Doctor Who Online
Behind the Sofa
Doctor Who Reference Guide
Doctor Who Web Guide
Who Is Doctor Who?
Adventures in Time and Space
New Who Review
The Doctor's Companions (fanlisting)
Kasterborous: a UK Doctor Who Webzine

cast websites
Christopher Eccleston.com
Christopher Eccleston.net
Hidden Shallows: A Christopher Eccleston Fansite
Billie Piper Style
The Ultimate Billie Piper Links
David Tennant
David Tennant.com
John Barrowman Online

livejournal communities
who_daily
new_who
time and chips
doctorwho
galactic_conman
better_with_3
sortofyeah
_fantasticons
barrowmanfans
billie_love
daleks_reunited
doctor_who_gen
doctorslashjack
doctorwho
doctorwho_eps
dw_challenge
dw_recs
dw_santa
dw_slash
dw100
dwfanvids
dwfiction
dwicons
girl_doctor
ipswich
leftbehind__
new_who_wotdfic
prydonianfic
tardis_icons
tennant_love
the_tenth
torch_wood
who_otp
whoicons

image resources
Chaotic-Creative
Stakes & Stones Screencaps
Nine and Ten Screencaps
Doctor Who Image Archive
Aftershock
The Innuendo Squad
Doctor Who Logo Archive
Doctor Who's Tragical History Tour

illustrators
tea-lady.co.uk illustrator Lee Binding
hen.co.uk illustrator Henry Steadman

writers' resources
Canon Fodder
A forum for new Whovian writers to question original series fans regarding canon, and seperating fanon (i.e. material from outside the aired episodes such as Doctor Who media tie-in novels, comics, and audio adventures) from canon. No question too stupid... no answer too convoluted!

Doctor Who Transcripts
Don't have your tapes to hand, and need to confirm some dialogue for a story?Or want to try and clear up a bit of dialogue you just can't make out, and discovering that the as-produced script doesn't quite match the shooting scripts that have been published? Then this is the site for you.

Wikipedia
Includes cross-reffed character and episode guides for the first 26 seasons, as well as general overviews of Gallifrey, Time Lords, enemies, monsters, and pivitol supporting characters. NOTE: Please be aware that some entries feature material outside series canon, such as from the Doctor Who novels, comics, and audio adventures.

Oi! Yanks! No!
Excellent guide geared towards Americans and teaching them how not to butcher the English language when writing fiction involving actual English people, places, and things. Includes incredibly useful bits like what is heck is Morris dancing, and the proper ettiquette regarding speaking to strangers on train platforms.

Doctor Who Britpicking
Are you working on Doctor Who fan fiction, but not from the UK? Need a britpick beta to make certain you've got all your ducks in a row regarding dialect, idiom, geography, pop culture, and the nitty gritty that you may not be aware of? This is the forum for you.

Fanfic 101: Giveaways
A guide to common "tells" for non UK writers writing fiction set in the UK (or involving UK natives), as well as America for non-Americans, and how to avoid them