the open source tool Polaris (what's quoted this article) is completely free to use. There is a commercial product (Fairwinds Insights) that includes Polaris am

the open source tool Polaris (what's quoted this article) is completely free to use. There is a commercial product (Fairwinds Insights) that includes Polaris among many other tools that costs 79$/node... (disclaimer, I work at fairwinds)