User Scripts and Styles

Can we make preferences, user styles, and even mini scripts portable between apps?

What standards or specs exist?

Greasy Fork

https://greasyfork.org/en

User Preferences

We did a little bit of work on this in Sept 2019

My approach was not standards-oriented but I do encapsulate functionality between apps Launchlet Guide

https://launchlet.dev/guide/

I naively hope for it to be standardized, if there is significant adoption.