> Grails which is a web framework for Groovy that is based on spring boot. It's plugins
I thought Grails uses Spring Boot only from 3 onwards, and only versions up to Grails 2.x have a plugin ecosystem. Virtually no-one has upgraded their apps and plugins since Grails 3 came out in early 2015, and no-one's started new projects in Grails since then. To mention Spring Boot and Grails Plugins in the same statement is misleading.