Coingecko - CoinGecko is a free to use web-based and mobile application that provides financial market data for more than 2000 digital currencies.
CoinArbitrage - Crypto Currency Price Monitor in Real time with Alerts and Notification through email, sms, Desktop Notifications Instantly and watch all of your assets and coins in one place with 16 Exchanges, 6500+ Coin (bitcoin, etherum, dogecoin,litecoin,ripple)
CoinCap.io - Shows the prices of different cryptocurrencies from ShapeShift.
BitInfoCharts - Price, reward, difficulty, hashrate, market capitalization, block time, blocks count for all the...
CoinStats - CoinStats is a cryptocurrency research and portfolio tracker, that allows to access market data on over 3000 cryptocurrencies, track bitcoin and altcoin investments.
Coinranking.com - A mobile-friendly list of cryptocurrencies.