With SaxoTrader you can display 4 charts at the same time on your computer, 2 charts if you are on a Tablet and 1 chart on your smartphone.
This image shows the Charts view on a computer, where you also can A) Get the 4 charts on full screen, B) Expand one of the charts to the whole chart area and C) Open a chart in a separate browser window and locate it on a separate screen.