Well theres a few , you might wanna try lord of the rings online which goes free in sept. the lore is tight and the cut scenes arent bad, doesnt have the polish that WoW has but its decent, and if your into rts's go for league of legends or of course the monster of all rts's starcraft 2
Private servers are decent enough to play with consistency. There's one in particular that we play on that has only occasional crashes, meaning a few times a week, not a day. And when you play 24/7 that's not a lot. The quests work, mobs work, and I've never heard of any private server getting shut down once Blizzard finds them. They're out there on the web with a simple search, not like they're hiding. Some of these servers have been going for years, they shut down because the people running them either run out of money to keep it going or just move on to other things.
DDO, DDO, if you would like your more than welcome to party up with me on DDO. It's free and not to shabby, I'm still LVL 1, but I'm running quests on Elite, trying to go Epic solo; But Elite if fine by me too. I can def use some help, Healer, Pally, Ranger, any of those are great. PM me if you want to mob around with the Noobs~Mahoney
I like Forsaken World, which is a Perfect World game (they have about a half-dozen). Free to play, but you'll want to dip into the cash shop for a few little things like bag/bank expansions. There's just never enough bag space in the world.
Runes of Magic, Runescape, Sword 2 there are a bunch. (sword 2 might be my favorite). Try this site. FreeGamesLike.com It is where a got all my games like Wow! I think it is the first one listed on the site. haha