bluenestbryan

This plugin adds the name and path of the theme (template) file used to generate the html page into the page’s source as a comment. It will also add the name of the header, footer and sidebar if they are included.
This is useful for debugging and seeing what template file generated a page.
To use, activate, then reload any open pages. In the HTML comments, you can search for “TEMPLATE INFO” to see the added comments with the names of the template files included.

Template File Name Debugger

Add the name of the theme (template) files used to generate a page into the page's
source as a comment.

mayel2b

Helps you more effectively edit your themes or plugins when you only have access to a browser, by enabling syntax highlighting in WordPress’ integrated source code editors. Supports PHP, HTML, CSS and JavaScript.
Please provide any feedback at http://anetech.eu/power-code-editor/
Everything is done in JavaScript on the client side.
At this time, the following browsers are supported: 
* Firefox 1.5 or higher 
* Internet Explorer 6 or higher 
* Safari 3 or higher 
* Opera 9.52 or higher 
* Chrome
Licensed under the GNU GPL v2.
Uses the excellent CodeMirror JS library : 
http://marijn.haverbeke.nl/codemirror/

Power Code Editor

Enables syntax highlighting in the integrated source code editors. Supports PHP, HTML, CSS and JS.

Template File Name Debugger vs Power Code Editor