I'm working on a Wordpress-replacement written in Go, distributed as a single static binary with SQLite/Postgres for db and Disk/S3/GCS for storage.
Stuff like custom forms, calculators, booking systems... For one customer I implemented a complete web hosting client control panel as a set of WP plugins.
It was a while since I had a look on how the plugin system works in Wordpress. I should read up on that. Thanks for the feedback!