Litecoin is one I've heard a lot about, and Namecoin is supposed to be a sort of Bitcoin-based DNS, taking the advantages to a different arena. According to Wi

Litecoin is one I've heard a lot about, and Namecoin is supposed to be a sort of Bitcoin-based DNS, taking the advantages to a different arena. According to Wikipedia [1] all of the big cryptocurrencies are inspired by / based on Bitcoin. [1] http://en.wikipedia.org/wiki/List_of_cryptocurrencies http://en.wikipedia.org/wiki/List_of_cryptocurrencies