Ilias P

codinghabits

This is a WordPress plugin that helps visualize the position of action hooks in the front-end. It is compatible with any theme or plugin as long as it doesn’t use dynamic names for its actions. 
This plugin detects once per day all “do_action” (except dynamic ones) functions from .php files in the wp-content/plugins & wp-content/themes folder & highlights their position in the front-end of the website when requested. 
Only administrators will be able to see the highlights.

Visual Action Hooks

Detect action hooks added with "do_action" function from any theme or plugin & display them for logged in administrators.

Sam Hoe

Simple modify WordPress default help content or custom post type help content. Additional one help menu for custom help guide. You also can add dashboard widget. This plugin is more for theme developer.

SH Contextual Help

Simple modify Wordpress default help content or custom post type help content. Additional one help menu for custom help guide.

Visual Action Hooks vs SH Contextual Help