CoinMarketCap — a go to place for checking the cryptocurrency market and quick info about each coin's background.
Wallmine — large amounts of information about each cryptocurrency including prices, technicals, news, significant events, and trends. You can use the screener for finding cryptocurrencies and comparing them using a wide range of metrics.
Yahoo Finance — yahoo finance added support for cryptocurrencies and the data provided includes price charts, fundamentals, and basic info.