I play Ryzom :
http://ryzom.com/?lang=en
A sandbox with almost no quest but a rich lore and a lots of rolplayer, consensual pvp, free to play with a lvl cap.
Very basic combat with almost no skill envolve.
What is like H&H :
- a lot is about exploration, finding good ressources
- you only loot basic stuff like animal fure and bones, all the gear must be craft
- every thing is craft by players, very rich crafting
- no global lvl, you lvl skills
- no class, you can specialize in everything
- dramas, guilds with very different view of the game and atmosphere
- dont need a top PC, work on windows, mac, linux
- old game with simple graphics, drive by a fanatic fan base
- lots of stuff to be find in wikis and such
- local storage, fiew teleporters
- big world, no instances, one server
- number of players

Difference with H&H :
- consensual pvp and no looting of player
- no housing
- no LP, you learn skill by doing them
- everybody is outside, you meet people and group to do stuff
- very freindly and helpfull comunity, very lively chat
- very rich lore and RP stuff
- its not a competitive game : players are not the counter strike type , but more 35-45 year old women that want to relax and chat, some linux nerds to
- no client mods, no bots, no cash shop
- like in Eve, even after years of playing, you learn new stuff about the game everyday