Jesper van Engelen

The Sidebars & Widgets extension for the Debug Bar shows you all you need to know about the sidebars and widgets on the current page. It shows the sidebars displayed and the widgets displayed in them, and tells you whether all widgets in the sidebar were actually displayed.
This plugin allows you to analyze the behaviour of your WordPress sidebars and wigets, and is aimed at WordPress developers.
<blockquote>
This plugin is an extension to the <a href="https://wordpress.org/plugins/debug-bar/" rel="ugc">Debug Bar plugin</a>, which is required for this plugin to work.
</blockquote>
This plugin integrates nicely with <a href="https://wordpress.org/plugins/content-aware-sidebars/" rel="ugc">Content Aware Sidebars</a>, telling you what sidebars were replaced and merged. It is an essential plugin if you use Content Aware Sidebars with a big number of sidebars.

Debug Bar – Sidebars & Widgets

Debug Bar extension that adds information about the sidebars and widgets on the current page. Integrates with Content Aware Sidebars plugin.

Juliette Reinders Folmer

Debug Bar Post Types adds a new panel to the Debug Bar that displays detailed information about the registered post types for your site.
<h4>Important</h4>
This plugin requires the <a href="https://wordpress.org/plugins/debug-bar/" rel="ugc">Debug Bar</a> plugin to be installed and activated.
Also note that this plugin should be used solely for debugging and/or in a development environment and is not intended for use on a production site.
If you like this plugin, please <a href="https://wordpress.org/support/view/plugin-reviews/debug-bar-post-types" rel="ugc">rate and/or review</a> it. If you have ideas on how to make the plugin even better or if you have found any bugs, please report these in the <a href="https://wordpress.org/support/plugin/debug-bar-post-types" rel="ugc">Support Forum</a> or in the <a href="https://github.com/jrfnl/Debug-Bar-Post-Types/issues" rel="nofollow ugc">GitHub repository</a>.

Debug Bar Post Types

Debug Bar Post Types adds a new panel to the Debug Bar with detailed information about registered post types. Requires "Debug Bar" plugin.

Debug Bar – Sidebars & Widgets vs Debug Bar Post Types