The best bit of Faddom is the Application discovery piece, from a URL or single host, Faddom will draw you a diagram of the application architecture, load balancers, web servers, databases, file servers and so on. You might need to tidy this up on occasion, but it's much quicker than any other way I've found. Review collected by and hosted on G2.com.
The diagrams are not the prettiest out of the box, but you can export them to make them look better in a different tool. The cloud cost generator works best with AWS, was a bit off with Azure. Review collected by and hosted on G2.com.
