A Plugin for Wordpress that displays additional information to help the developer.

Deprecation Checker simply scans your plugins, themes, and custom directories for deprecated functions.

Visual debugging tools for block development.

Dump variables and traces in an organized and interactive display. Integrates seamlessly with Debug Bar.

Admin page debugger tool

This plugin adds an “Open In Social Debugger” link to the admin bar, which opens the current page or post in a social network debugger.

Intended for Developers: This template debugger helps you identify what template files are being used on the page you're viewing.

Peek under the hood with sixty debugging reports just one click away.

Lists WordPress require() calls mainly for plugin code refactoring.

Provides debugging information and insight into your WordPress application. Displays a list of all hooks fired (with arguments passed) on the current page, peak memory usage, SQL queries executed, some basic information about PHP and information about the current theme.

WP Tracy is a plugin that automatically inserts debugger (Nette) Tracy into WordPress.

Gravity Forms Add On. Adds custom tabindex field to the "Advanced" tab for form fields.

Plugin implements the awesome dBug class created by Kwaku Otchere for use in WordPress plugin debugging