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.

GRAQ

If you are writing something that spans multiple posts (e.g. Guide, FAQ, Product Review), and you want 
to group these posts together. You can still use your usual categories and tags.
The article name is prefixed to the post title and a small ‘mini menu’ is added at the end, or beginning, of the post.

Articalise

For grouping posts together that are all part of one article.

Visual Action Hooks vs Articalise