Giulio Daprela

This plugin is a ‘swiss army knife’ of custom fields. It allows you to manipulate them to make it easy the testing and debugging of applications.
This plugin was built in a moment of desperation when I couldn’t access phpMyAdmin in a mu website. 
I absolutely needed to manipulate the custom fields for testing and debugging, version 1.0 was up in 4 hours. 
In the following months I realized how useful the plugin was and couldn’t work anymore without it. It had become part of my standard toolset.
Features: 
1 Read/write/delete options, user fields and post fields. 
2 Populate the field with an empty array. 
3 Insert a date string and translate it into a timestamp or vice versa to emulate specific dates. 
4 Change name to a field. 
5 Copy any field’s content to any other field (for example, option to user field) even of a different name.
You can contribute to the plugin or just study the code on the <a href="https://github.com/daprela/dapre-custom-fields-tools/" rel="nofollow ugc">Github repo</a>.

Dapre Custom Fields Tools

Works exceptionally well to assist in debugging and testing of custom fields in WordPress. Does it well, and saves you time.

Does what it says on the box

This plugin is the 'swiss army knife' of custom fields. It allows you to manipulate them from the dashboard to make it easy testing and debu …

Melissa Cabral

A simple, lightweight plugin that displays useful technical information on pages and posts to aid in developing WordPress Classic themes. Provides quick access to things that are sometimes hidden, like post/page ID, slug, taxonomy terms, and post type slug. Theme Inspector tells you exactly what conditional tags are true on each view, and what template file loaded on each page view.
<ul>
<li>Use In Conjunction with the <a href="https://docs.google.com/drawings/d/1hJ0MpHO3HKBT5KsTpGtc_gDYZ5pi-HyxNcRtmPBBULE" rel="nofollow ugc">WP Template Hierarchy Document</a>.</li>
<li>Theme Inspector is only visible to logged in Administrators.</li>
<li>Appears on the right-side of the Toolbar (admin bar).</li>
</ul>

Theme Inspector

A developer's inspector to illuminate the WordPress Template Hierarchy and help with building WordPress Classic themes.

Dapre Custom Fields Tools vs Theme Inspector