This is a list witth all the running webcomics. They are updated from time to time.
Blaster Nation
Ctrl+Alt+Del
Cyanide & Happiness
Dark Legacy
Darths & Droids
Deadwinter
Dilbert
Dork Tower
Dresden Codak
Dr. McNinja
Ed′s R. Us
Extra Ordinary
Fredo & Pid′jin
The Gentlemans Armchair
Girl Genius
Goblins
Gunnerkrigg Court
Hark! A Vagrant
Joe Loves Crappy Movies
Kevin and Kell
Least I could do
Legostar Galactica
Looking for group
Maximumble
Megatokyo
Ménage à 3
Misfile
Nerf This
Oglaf
Order of the Stick
The Perry Bible Fellowship
The punchline is machismo
Questionable Content
Rice Boy
Romantically Apocalyptic
Sandra and Woo
Sluggy Freelance
SMBC
Sorcery 101
Star Power
Stupidfox
Subnormality
Two Kinds
Unsounded
Unspeakable Vault of Doom
VG Cats
Wally and Osborne
What if
Wondermark
XKDC
Yet Another Fantasy Gamer Comic
Zero Punctuation