Simon Prosser

Debugging tool for theme authors and reviewers.
This tool intercepts all debug information and prints it all out neatly into the footer. It also checks each page for W3C validation. 
This plugin is released as a tool to aid the development of themes and plugins for WordPress and can be used to aid debugging your theme before submission to the themes directory.

Debogger

Debugging tool for theme authors and reviewers.

envato

A Template Kit is a collection of pre-designed starter templates for a WordPress Site Builder that share a cohesive visual style.
You can use this plugin to Import Template kits for Elementor.
Once this plugin is activated go to “Tools” > “Template Kit” to begin importing.

Template Kit – Import

Use this plugin to import Template Kits to WordPress

Debogger vs Template Kit – Import