Config settings by many OS distro

I ran into an awesome website that shows configuration setup of many server/daemon software by selecting a specific OS distro.

And it was a cool thing to see how its configuration file changes as you pick FreeBSD, a specific Linux distro, or even Windows (by CLI).

But alas I forgot to bookmark it much less unable to find it in my browser history. Attempts to search for this at search engines using many keywords were fruitless.

A little help?