They are clearly the market leaders in terms of online btc wallet. What are the alternatives?
If you're satisfied with what blockchain.info brings to the table then just keep on using them.
But if you want suggestions:
- Electrum(you have to download it though)
- BTC.com(multisig wallet, trusted)
- Coinbase(easy to buy and sell but at the same time, you don't control your own private keys and support is bad)
- Greenaddress(many options, including nlocktime and multisig i believe)
- Coinb.in(advanced users)
There's also a bunch of others which are more like exchanges than wallets, which i do not recommend using.