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.

Christoph Daum

This plugin enhances the AdminBar and adds links to development, staging and live version of your website, furthermore it allows you to choose a color scheme of your AdminBar for all users on a website, including the frontend. 
You also have to option to control the robots.txt visibility settings, in the newest version you get a watermark for posts that are in draft or scheduled, and a keyboard shortcut to hide the adminbar.
If you want to participate in the development <a href="https://github.com/apermo/apermo-adminbar" rel="nofollow ugc">head over to GitHub</a>!

Apermo AdminBar

Every professional WordPress developer should have at least two environments when working on projects: development and production. But how often do you find yourself lost in these environments? @apermo done a great job solving this issue with this plugin. 

Conclusion: I can highly recommend this fantastic plugin!

Fantastic plugin!

This plugin helps tremendously if you want to switch between different versions of the website. (Staging, dev, live, etc.) 

Thank you!

Good Helper

This plugin allows you to add links between a development, staging and live version of your website, and adds them to the AdminBar.

Current Page Template Viewer vs Apermo AdminBar