What sites/programs are people using to view multiple charts on one screen?

Question is in the title. I'm looking for something capable of putting up 8-12 different charts at a time. Ideally with dark mode. A majority of the screen shots I see are all on white backgrounds and my office is deliberately kept like a dungeon.

I use Schwab and I guess they have Thinkorswim which might fit the bill. StockCharts makes it sound like the charts are not automatically updated in real time according to their "excessive chart request policy".