The altcoin ETH is a currency of the Ethereum network made for smart contracts creation. Ethereum it not just a network but a whole platform allowing programmers to develop various decentralized applications.
The history of Ethereum began in February 2014. Pre-sales of its own cryptocurrency brought its developers about $18 million in 2014, and it is necessary to note that so far none of the buyers remain at a loss.
Users were able to buy 1000 ETH and 2000 ETH (at early stages of pre-sale) for 1 BTC. Later it turned out to be a good capital investment. Collected money in USD helped programmers to develop rough activity (which goals and mission are not really easy to understand so far).