Good Morning,

I am beginning work on a reptile website for a friend. I noticed that a lot of websites have the same basic underlying layout. It would appear to be a content management system, like wordpress, but not. Unless there is a plugin at work. I would love to know what they are using so I do not have to reinvent the wheel. Anyone have any clues? I would post a few examples of what I am talking about, but not sure if that is allowed or not.