I found an interesting article talking about 7 cryptocurrencies to watch in 2018
https://www.marketwatch.com/story/7-cryptocurrencies-to-watch-in-2018-if-youre-on-the-hunt-for-the-next-bitcoin-2017-12-12Here is there list of 7 Cryptocurrencies to watch in 20181.) Litecoin (LTC)Market cap, as of December 19, 2017: $19.53 billion
Performance as of December 19, 2017: +9,080%
2.) Monero (XMR)Market cap, as of December 19, 2017: $5.9 billion
Performance as of December 19, 2017: +3,033%
3.) Neo Market cap, as of December 19, 2017: $5.01 billion
Performance as of December 19, 2017: +69,219%
4.) Cardano (Ada) Market cap, as of December 19, 2017: $13.49 billion
Performance as of December 19, 2017: +2,059% (Started to trade in October)
5.) Ripple (XRP)Market cap, as of December 19, 2017: $29.66 billion
Performance as of December 19, 2017: +12,606%
6.) Iota (MIOTA)Market cap, as of December 19, 2017: $11.796 billion
Performance as of December 19, 2017: +564% (Started to trade in June)
7.) Bitcoin CashMarket cap, as of December 19, 2017: $37.08 billion
Performance as of December 19, 2017: +488% (Started to trade in July)