Where can I find an app or even just a webpage that lets me see a variety of stock prices over time?

I want a dashboard/watchlist of stocks of my choosing that shows the history going back six months or a year for each stock. It doesn't seem like this would be hard to find, but I have found no apps or pages that do it yet. Most will show you the history for an individual stock if you click it, but I want a whole dashboard of them with options to add, remove, and sort stocks as well as choose the length of history I want to see in a long graph form.