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

The Plugin adds a simple keyboard shortcut for mac and windows, and allows you to hide or show the adminbar in the frontend, very handy for themes using a sticky navigation. 
It is the smaller brother of my plugin <a href="https://wordpress.org/plugins/apermo-adminbar/" rel="ugc">Apermo AdminBar</a> which contains the same functionality and more advanced features.
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 Toggle

This plugin simple allows you to toggle the AdminBar on and off just with the keyboard.

Current Page Template Viewer vs Apermo AdminBar Toggle