Bookmap

Bookmap is one of a kind: it visualizes the order book (heatmap) in real time, showing where liquidity sits and how it moves. It's an advanced tool, more of a complement to your main platform than a replacement, particularly useful for intraday futures and indices.

These are the prop firms that offer Bookmap as part of their package. Many include it alongside NinjaTrader or Quantower; check which license tier is included to know whether you'll have access to the full heatmap or just the basic version.