FinViz - Stock screener for investors and traders, financial visualizations.
Sharesight - Online stock portfolio tracker that automatically tracks prices, dividends, performance and tax.
2nd Watch - 2nd Watch is the Managed Cloud Services provider for public cloud.
wallmine - US stock market today: stock quotes, stock screener, stock charts, insider trading, market news, portfolio tracking, and cryptocurrencies.
TradingView - The best charting tool for crypto and stocks
Yahoo! Finance - At Yahoo Finance, you get free stock quotes, up-to-date news, portfolio management resources, international market data, social interaction and mortgage rates that help you manage your financial life.