We are launching alpha version of https://www.blockonomics.co . This helps you to keep track of balance / transactions of bitcoin addresses. It doesn't require your private keys,  you can add any public bitcoin addresses and enjoy !

• You can use this  to help you in receiving payment/debit alerts. It sends out a nice notification email on credits/debits. A maximum of one email is sent per block per user.

• Transactions can be viewed in Activity logs
• If you have coins in cold storage or use desktop  wallet, you can use this service to easily monitor the balance of your wallet from anywhere.  No need to open your bitcoin wallet each time. Just add all your addresses and chill out with peace !

Server uses leveldb to store/index bitcoind data. In process of adding more features like visualization of transactions and API support.
Please free feel to let me know suggestions