An online survey is conducting at https://strawpoll.de/y4wwg4y, as at the time of writing, shows that Electroneum (ETN) will be the best alt-coin in 2018.
ETN - Mineable
Electroneum is a new digital currency (ETN) that can be also mined using smartphones. Currently, the Electroneum blockchain is live and ETN coin can be exchanged at Cryptopia.ADA - Not Mineable
Cardano is a decentralised public blockchain and cryptocurrency project and is fully open source. Cardano is developing a smart contract platform which seeks to deliver more advanced features than any protocol previously developed. It is the first blockchain platform to evolve out of a scientific philosophy and a research-first driven approach.IOTA - Not Mineable
IOTA is a revolutionary new transactional settlement and data transfer layer for the Internet of Things. It’s based on a new distributed ledger, the Tangle, which overcomes the inefficiencies of current Blockchain designs and introduces a new way of reaching consensus in a decentralized peer-to-peer system.NEO - Not Mineable
NEO is a non-profit community-based blockchain project that utilizes blockchain technology and digital identity to digitize assets, to automate the management of digital assets using smart contracts, and to realize a "smart economy" with a distributed network.
Digital Assets + Digital Identity + Smart Contract = Smart EconomyBitquence (BQX) - Not Mineable
BQX is a Functional Token that allows users to access the Bitquence Platform and services that provides users with critical functionality to assist user in managing their wallets, keys and coins.