Nagaoka Design

This plugin helps WordPress developers by showing which template files are being used on the current page. It displays the current template file name and directory path in a convenient overlay, making it easy to identify which template is rendering the current page during development.
The plugin shows a small, unobtrusive display that can be clicked to reveal detailed information about all template files loaded for the current page.
Key Features: 
* Shows current template file name 
* Displays template directory path 
* Click to view all included template files 
* Configurable display position (top-left, top-right, bottom-left, bottom-right) 
* Customizable background and text colors 
* Admin-only display option for security 
* Debug mode option (only shows when WP_DEBUG is enabled) 
* Lightweight and performance-optimized 
* Clean, modern interface
Perfect for: 
* Theme developers 
* WordPress developers 
* Site debugging 
* Template hierarchy understanding 
* Development and staging environments
The plugin is designed to be completely safe and non-intrusive, with options to restrict visibility to administrators only.

Current Page Template Viewer

Display current template file and directory name on screen for WordPress development.

sant0sk1

This plugin adds a “Console” page to the administrator’s menu which provides a JavaScript-based interactive console that loads the WordPress environment. It allows execution of arbitrary PHP code as well as anything defined by WordPress or activated plugins. This is awesome for plugin developers and people learning PHP and/or the WordPress API. Still not convinced? <a href="http://vimeo.com/5300607" rel="nofollow ugc">Watch a screencast!</a>
<h4>New In This Version</h4>
<ol>
<li>WordPress 3.5 Compatibility</li>
</ol>
SECURITY NOTICE
This plugin is for development. Do NOT run this plugin on your production server unless you don’t mind possibly being owned by strangers.
<h3>Contributors</h3>
<ul>
<li><a href="http://blog.apokalyptik.com/" rel="nofollow ugc">apokalyptik</a></li>
<li><a href="http://pixelgraphics.us/" rel="nofollow ugc">Doug Neiner</a></li>
<li><a href="https://github.com/mweichert" rel="nofollow ugc">Michael Weichert</a></li>
</ul>

WordPress Console

A great plugin to quickly evaluate some wordpress-functions.
If you develop a plugin and just want to do a quick check for return-values of some wordpress-functions, this is great help.



Works ... even for 4.4

An interactive console for WordPress developers

Current Page Template Viewer vs WordPress Console