There are times that you need to know the ID number of a page or post in WordPress and it can be more painful than it should be to find that number. This plugin does one simple thing: it displays the ID number of the page, post, category, or tag you are looking at in the WordPress Admin Bar. It appends this ID to the edit menu already on the Admin Bar. Needless to say, that means that this plugin is only useful for WordPress version 3.1 or above, since the Admin Bar was first introduced with 3.1.

Admin Bar ID Menu

Makes the ID number of the current page or post visible in the Admin Bar.

versusbassz

Sortable ID columns for all standard data types in WordPress admin panel. 
No settings pages. It just works. 
ID columns will be first in admin panel tables.
Supported entities: 
* posts, pages, attachments, any custom post types 
* category, term, any custom taxonomies 
* users (including Multisite users) 
* comments 
* links (the legacy WP feature) 
* blogs (aka “sites”) in Multisite Admin panel
<h4>Links</h4>
<a href="https://github.com/versusbassz/sortable-id-columns/" rel="nofollow ugc">Github repo</a>

HH sortable ID columns

Sortable ID columns for all standard data types in WordPress admin panel.

Admin Bar ID Menu vs HH sortable ID columns