Inventory of technologies used in a webapp / website
Is there software that will report all the software / libraries / dbms etc. and versions plus the services running on a given website? As a use case, I would like to be able to detect if a webapp is using Apache and whether LOG4J is active and what version is running. Obviously, this is a specific and there will be other services / API etc, running so it is whether there is a simple way to create the inventory of assets used so when a security issue is raise we can quickly check if a site is affected. Apologies if this is a stupid question to you but hopefully you can see what I am trying to achieve.