(I work at Deployd) From our perspective, one of our ultimate goals is to create a platform where the tech stack doesn't matter to the user. We've partially solved this with the Mac/Windows installer - it installs Node.js and MongoDB dependencies itself. That way, you don't need to know the stack unless you're developing extensions (which are node modules).

However, I do agree that we need to document the stack better for those that want to install from source, or host it themselves.