My top five alternatives to Coin Market Cap www.coinmarketcap.com
OnChain FX Cryptoasset rankings and metrics
https://onchainfx.com/
CoinCodex - CryptoCurrencies - Real-Time Coin Prices, Historical Charts and Crypto Market Cap
https://coincodex.com/
CryptoWatch
https://cryptowat.ch/
Live Coin Watch (Beta)
https://www.livecoinwatch.com
CryptoCompare
https://www.cryptocompare.com/coins/list/USD/1
Want to build your own CoinMarketCap alternative?
CCXT - A JavaScript / Python / PHP cryptocurrency trading library with support for more than 90 bitcoin/altcoin exchanges
https://github.com/ccxt/ccxt