Slackware wasn't the first Linux distro, but it's the oldest still alive and kicking
(www.theregister.com)
I never heard of that one. A distro that I used for a few years was called "Mage" though, which provided what I thought any of them should have been doing. I eventually stumbled on Ubuntu, but they burned me so many times trying to run servers, that's when I finally got on Debian. Nothing worse than having their security updates destroy all network access, and still having the ticket open at least 15 years later (I was still getting pinged from other people running into the same issue on bugzilla).