Website visitors
How Can I track website visitors?
Most hosting providers include this feature with their accounts, so check with your provider first.
There are also many "third-party" options for managing logs of website visitors. But note that if you use a third-party service, you are giving that service access to information about who visits your site and how, which may be a concern depending on the privacy practices of that third party. See, e.g., web bug for some related issues and implications.