Any "light" wallet for ethereum like electrum

[pornluver]

There is something called my ether wallet.

However that is very strange.

As far as I know, in typical bitcoin wallet, your money is not in just one private addresses. In fact, one wallet always contain tons of wallet.

So how come myetherwallet generate one private key and that's it your wallet.

Anyway I kind of like to be able to regenerate my wallet using 12 words. So yea anything like that?