Tab Reloader is a Firefox add-on that makes it easy to periodically reload or refresh tabs. So, it can be used to view the latest updates on stock prices, news, and so on. Download and install it from here. After it is installed, you can allow it to run in Private Windows too if needed. To use it, go to the tab which needs to be periodically reloaded and click on the Tab Reloader add-on icon. Choosing...