Are there any online wallet?. for those who we do not want to install linux.
not yet, Jaxx will release one very soon
We have just added Zcash ZEC support to the Cryptonator online wallet at https://www.cryptonator.com
Yet just deposit/withdrawals without instant exchange due to the exchange rates fluctuations.
Minimum incoming/outgoing transaction 0.0001 ZEC
12 confirmations required for deposit.
Hope it helps
Instant Zcash ZEC exchange is now available inside Cryptonator accounts https://www.cryptonator.com/about/zec
Jaxx has released their wallets :
Just register on poloniex and use the zec wallet 
Poloniex is not a wallet but an exchange broker.