Dogan Ucar

WP Last Modified adds the ‚last_modified_date‘ shortcode to your WordPress installation. This shortcode shows the last timestamp of your post/page. Simply use the „format“ attribute for custom date formats (it uses PHP’s date() function). 
The “description” attribute enables a brief description which changes has been made with the last modification. 
WP Last Modified shows also the actual revision of and the publication date of the post/page. 
You can customize the text which will be shown under each post/page under settings -> WP Last Modified Settings. You can also hide one of the elements if you do not want them.
With version 1.1.0, WP Open Last Modified was renamed to WP Last Modified.
Features:
<ul>
<li>last modification timestamp of a post/page</li>
<li>publication timestamp of a post/page</li>
<li>timestamp format customizable</li>
<li>revision count</li>
<li>custom text with placeholders</li>
<li>last modification description</li>
<li>excluding single posts/pages from displaying the last modification timestamp</li>
</ul>

WP Last Modified

This plugins adds the last modified date, current revision and the publication date of your post/page. Simply use the shortcode [last_modified_date]

djm56

Micro Site Care: Post Last Updated Date adds a last-updated date label to your posts and pages. It is lightweight, uses no JavaScript, and integrates cleanly with any theme.
Key features:
<ul>
<li>Show the last-updated date automatically before content, after content, or in both positions.</li>
<li>Set placement to Manual and use the template tag in your theme for full control over where the label appears.</li>
<li>Customise the label text with a flexible template — use <code>%s</code> to insert the date, or omit it to show a static label.</li>
<li>Choose between the WordPress site date format or a custom PHP date format string.</li>
<li>Optionally suppress the label when the modified date matches the publish date (suppress unchanged posts).</li>
<li>Target specific post types, or exclude selected post types from an all-types baseline.</li>
<li>Clean HTML5 <code><time></code> element output with an ISO 8601 <code>datetime</code> attribute for SEO and screen readers.</li>
<li>Developer-friendly: four filter hooks to customise visibility, label, CSS classes, and final HTML output.</li>
<li>Compatible with MSC Post Last Updated Date Pro for relative dates, style presets, per-post overrides, and shortcodes.</li>
</ul>

Micro Site Care: Post Last Updated Date

Display and control the last-updated date for your WordPress posts and pages, with flexible placement and label options.

WP Last Modified vs Micro Site Care: Post Last Updated Date