[EA]

Anyone remember Noah Grey's "Grey Matter"?

It was an inspiration to what became WordPress

https://en.wikipedia.org/wiki/Greymatter_(software)

[tremendo]

I do remember Greymatter when blogging was young, it was Perl-based and it was mostly replaced by Movable-type, also Perl-based before WP finally came to dominate the scene. Textpattern was also popular for a while. I believe Wordpress derived form ExpressionEngine?

[Fastidious]

WordPress derived from B2.