Free MMORPGs for those who own older computers
http://www.mmorpg.com/gamelist.cfm/ this is a nice list of mmorpgs (not all free)

I would recommend a few old-school mmorpgs that are quite nice i would say.

www.runescape.com RuneScape one of the best games ever ( i think no other java game has reached so far,biggest mmorpg in java,quite old mmorpg and it improved so much,and it has free2play too )

http://www.cronous.com/main.asp croNous

DragonRaja http://www.dragonraja.eu/ a very very epic mmorpg. (check Spells and Combat Skills and see for yourself :D http://www.dragonraja.eu/game_guide/spells ; http://www.dragonraja.eu/game_guide/combat_skills )

http://dk.ignitedgames.com/center/default.asp Dark Eden - This is like Diablo 2 but with Humans vs Vampires vs Witches ( ah i checked the IgnitedGames Dark Eden shuts down but there are other servers like Dark Eden Genesis http://darkedengenesis.com/ etc )

www.pathofexile.com see if this works for you if it does it's very nice.


Now,these next ones ,haven't played them since a while so i don't know what their system requirments might be but still probably low enough ( for MU Online maybe search older odler versions like 97.d , season 2,3,4,5 servers,don't know the current official version. )

First 3games by TQ Digital - Eudemons Online http://eo.91.com/ , Monster & Me (this got cancelled yeap..Eudemons Online & Monster & Me were such very interesting and innovative mmorpgs,especially Monster&Me since Eudemons Online was like Conquer with pets and mounts... Monster & Me last time i played it had hackers,scripters,cheaters and then the asskissers who worshipped them,guess that's why it went to hell heh )
and Conquer Online http://co.91.com/ (if this doesnt work check other servers of it )

Vindictus search for the servers in your area,North America servers are on Steam too i think,or Asia,Europe idk see for yourselves.

There are a few other mmorpgs i think but i'm too tired atm. Definatly try out Dragon Raja,CroNous,Runescape and Official and other older versions/seasons of Mu Online :D