ETH, Monero, Siacoin, IOTA, Golem, ripple are some of the well known coins which have a practical use. PERL coin came up with a good practice, the coin became opacity coin. What are the remaining alt-coins which have practical usage?
It is quite very easy to find a coin with good use case, as a matter of fact, there are so many of them, but a lot of them are already dead. Perhaps because the team could not continue with the idea. They lost focus along the line. Some with wrong motives at the start of the project might still prove to you that they have a practical use case, meanwhile they are all shambles.