Altcoin are modified Nakamoto currency. Some of  Altcoin has better advantages and user interface then that of bitcoin. Some of these coin are Ethereum, Litecoin etc. Litecoin is mostly used for online money transaction because it provides faster and secure transaction. And its price is also increases time to time. Ethereum is also an highly accept Altcoin by many developed and developing countries. These coin are also accepted by many online retailers and small  businesses to setup their business. According to these above thing these above Altcoin will lead the crypto world in future.