LTC is the only legit alternative currency.
All the others are bullshit like clones or anon coins or not a currency at all.
Prime Coin, Grid Coin get a worthy mention though.Now you know 
1. ETH ... what is it ?
If only there was no such as on Lisk. Big rise, and then prolonged fall.
I think the fall of Lisk is slow development. It's seem to have nothing at this point after 1 year, app wise.
Ark already have everything stable before the mainnet launch, this took Lisk almost 1year to have. They also already have 200tx/s(TPS). This is the reason I'm interested in ARK.