[Nikkan]

Here is a list of some free and english mmorpgs with cute anime style

Ether Saga
http://eso.perfectworld.com/

Spoiler for pictures:

Holy Beast Online
http://hb.getamped.com/home

Spoiler for Pictures:

DOMO (Dream of Mirror)
Europe only: http://www.gametribe.com/gt/domo.do
Everyone else: http://domo.aeriagames.com/

Spoiler for Pictures:

LaTale Online sidescroller that I recommend~
http://latale.ogplanet.com/main.og

Spoiler for Pictures:

S4 league Online anime shooter that I really recommend~
http://s4.en.alaplaya.net/

Spoiler for Pictures:

Trickster
http://trickster.ntreev.net/

Spoiler for Pictures:

Scions of Fate
http://fate.netgame.com/

Spoiler for Pictures:

Seal Online
http://sealonline.dontblynk.com/

Spoiler for Pictures:

Wonderland Online
http://wl.igg.com/

Spoiler for Pictures:

Dragonica 3D online sidescroller that I recommend~
Europe: http://en.dragonica.gpotato.eu/ad/
Everyone else: http://dragonica.iahgames.com/

Spoiler for Pictures:

Didn't need to have Flyff or Ragnarok in the list since everyone allready talked about it.
EDIT: added Dragonica