Trading Crypto-currency is the latest in a long line of "make money doing nothing" trends, although admittedly if done correctly you can actually make some profit off of it.
However, this involves having constant knowledge of how the market works and what is the current standing of a certain Crypto, thus allowing you to buy when it is cheapest, and sell when it is at its highest value.
There are plenty of programs out there that offer live monitoring of the current state of the crypto market, one of which is Crypto Arbitrage Monitor.

While ignoring the account registration process, using the program per se is done fairly easy, since all you need to do is specify which cryptos and which exchanges interest you the most and then simply launch the program.
Depending on how many cryptos you choose to monitor, the app will provide you with a list that is bigger or smaller, but most importantly it will provide you with a list that is updated in real-time.

It doesn't matter on which exchange you're interested in finding out what is the conversion rate between Ethereum and the USD Crypto Arbitrage Monitor will show them all.
You get to see the buying and selling price, the price difference and the possible profit achievable when performing a certain exchange.
If the list seems way too cluttered for you, you can set your own filters, making the program display only exchanges that have a minimum profit barrier, or you can choose to view only certain cryptos or exchanges.

Crypto Arbitrage Monitor may not guarantee you get rich, but if you possess the right skills, it will come as an extremely useful program, aiding you on the way towards making transactions that are at least profitable.