You can see some alternatives here as well, ranked based on market cap: http://coinmarketcap.com/ http://coinmarketcap.com/ I think Litecoin, Peercoin, Namecoi

You can see some alternatives here as well, ranked based on market cap: http://coinmarketcap.com/ http://coinmarketcap.com/ I think Litecoin, Peercoin, Namecoin and Primecoin all have some interesting twists, and their value will likely grow in the coming months.