Taken from ONRPG.com
(non-crappy format in link)
http://www.onrpg.com/games_categories/free.html
Games: Free MMORPGs
Game Title
AdventureQuest 2D Fantasy Artix Entertainment Released Released 6 more
Anarchy Online 3D Sci-Fi Funcom Released Released 8 more
Aranock 2D Fantasy Aranock Released Released 4 more
Azurah Online 2D Fantasy Penguin Studios Released Released 5 more
Conquer 3D Medieval TQ Digital Released Released 8 more
Daimonin 2D Fantasy Michael Toennies Released 10/28/2004 6 more
Darkeden 2D Fantasy SOFTON LTD. Released Released 8 more
DarkSpace 3D Sci-Fi PaleStar Released Released 7 more
Deicide 3D Fantasy Ongameport Released Released 8 more
Dofus 2D Fantasy Ankama Released 06/10/2004 9 more
Dungeon Runners 3D Fantasy NCSoft Released Released 8 more
Eternal-land s 3D Fantasy Eternal-Lands Beta 11/16/2004 5 more
Eternal: Last Wraith 2D Fantasy WrathGames Released 01/21/2007 5 more
Faldon 2D Medieval Illusory Studios Released Released 6 more
FishingChamp 3D MMO Sports OnNet Released Released 8 more
Fly For fun 3D Fantasy GPotato Released Released 9 more
FTA 2D Sci-Fi FTA Released Released 1 more
Furcadia 2D Fantasy Dragon's Eye Productions Released 07/01/2004 4 more
Gekkeiju Online 3D Fantasy Coolhouse Released Released 5 more
Graalonline 2D Fantasy Cyberjoueurs Released Released 5 more
Hero Online 3D Historical Netgame Released 05/29/2006 7 more
Illarion 2D Fantasy Illarion eV Released 07/21/2004 2 more
Illutia 2D Fantasy Crazed Monkeys Released 01/23/2004 7 more
KAL Online 3D Medieval Inixsoft Released 11/10/2004 7 more
Kingdom Of Drakkar 2D Fantasy Drakkar Released 06/13/2004 7 more
Knight Online 3D Medieval K2 Network Released 12/31/2004 8 more
Land at War 3D Historical Eyes Out Entertainment In Development Released 7 more
Last Chaos 3D Fantasy Aeria Games Released Released 7 more
Lunia 3D Fantasy ALLM Beta Released 7 more
Maple Story 2D Fantasy Nexon Released Released 7 more
Martial Heroes 3D Historical CR-Space Released Released 7 more
Mixmaster 2D Fantasy SeedC Pacific Released Released 7 more
MU Online 3D Sci-Fi K2 Network Released 10/07/2004 7 more
Myth War 2D Fantasy Skyunion Released Released 7 more
Ogre Island 3D Fantasy Ogre Island, LLC Released Released 7 more
Oz World 3D Fantasy Ongameport Released Released 4 more
Pirate King Online 3D Fantasy MOLI Released Released 7 more
Project Entropia 3D Sci-Fi MindArk Released Released 5 more
Ran Online 3D Fantasy eGames Released Released 8 more
Rappelz 3D Fantasy Gala-Net Released Released 7 more
Realms of Strife 3D Fantasy ROStudios Released Released 4 more
RYL2: Inclomplete Union 3D Fantasy CiB Net Station Released Released 7 more
Scions of Fate (Yulgang) 3D Fantasy NetGame Released Released 8 more
Second Life 3D Fantasy Linden Research Released Released 9 more
Secrets of Mirage 2D Fantasy Scorpware Released Released 6 more
Shadowbane 3D Fantasy Ubisoft Released Released 6 more
Shot Online 3D Fantasy OnNet USA Released Released 7 more
SilkRoad 3D Fantasy Joymax Released Released 7 more
Space Cowboy Online 3D Sci-Fi MasangSoft Released Released 9 more
Tantra 3D Medieval ABS-CBN Interactive & Hanbitsoft Released 01/17/2005 7 more
Thang Online 3D Medieval Ongameport Released Released 7 more
Tibia 2D Fantasy CipSoft Released Released 7 more
Trickster 2D Fantasy Ntreev Released 05/25/2007 9 more
Turf Battles 3D Fantasy Hyper Engine Released Released 8 more
Voyage Century 3D Historical IGG Released Released 7 more
Warrock 3D Historical K2 Network Released 8 more
Xiah 3D Medieval OnNet Released Released 7 more
Zu Online 3D Historical IGG In Development Released 0 more