I am aware that this is not 2018 anymore. Nevertheless, I would still give my 2-3 altcoins that might grow double or triple by the end of the year. Just in case somebody is monitoring this thread for some suggestions.

I am sure Ethereum (ETH), Waves (Waves), and Monero (XMR) will more than double their values by the time the year 2019 will drop the curtain. Triple may be a bit too high a target but still very possible. The altcoins have yet to start their bull run. Come bull run, these coins will make it big in the charts.