2 alternatives to coinmarketcup! coincodex is modeled closely on CMC, but has a cleaner interface and some nice visualizations. For instance, you can filter results based on cryptocurrencies performance over a period of between 24 hours and a year and the site also has some useful cryptocurrency guides for beginners. The Coincodex Twitter is also worth a follow, as its stocked with interesting market tidbits interspersed with useful tips on emerging alts.
Cryptocompare
Cryptocompare is a one-stop-shop for all things crypto. View rankings for cryptocurrencies and exchanges, with recent trades displayed in real time. Filter coins by proof type or algorithm, view mining information and read reviews of wallets. Theres also a forum and commenting system, which provides an insight into user sentiment towards various coins and exchanges.