Any good web wallets that support addresses beginning with 'z'?

I’m looking for a good web based wallet (so that I don’t have to download the entire blockchain and become a node just to make a few quick transactions) that supports non-transparent addresses that begin with ‘z’. Does anyone know of a reliable one?

There are currently none. Keep an eye out for the reference wallet and associated light client protocol which should be released shortly Zcash Reference Wallet Light Client Protocol - Electric Coin Company

@garethtdavies thanks