This Plugin Truly Enhances WordPress Admin Bar By Adding Many Useful Options For It, Like, Bit.ly Shortlink, Custom Menu in Admin Bar and a lot more.
Delete posts on your WordPress blog by keyword searching
Removes all inline style tags from the content of posts/pages/custom post types.
An Ajax Plugin Helper for the WordPress admin plugin page. Adds Ajax activate, deactivate, delete and upgrade functionality.
Simple duplicate post deleter. Trashes duplicate posts based on status and category. Keeps newest or oldest original copy.
Allows one to bulk delete WordPress posts according to the specified conditions such as date range, post status, category and Author.
Allows admins to lock selected posts and pages so they cannot be edited or deleted by non-admin users.
Batch change post categories or published date incl. CRON rescheduling
Allows the administrator to remove the delete post link from the page lists and from the publish box in edit view.
Protects against inadvertant update and deletion of select plugins.
This plugin prevents users from deleting pages, posts and custom post types.
Delete the Custom Fields from your postmeta table where assigned posts no longer exist.
This plugin permits your members to delete their own account. All languages supported!
WP Tag Delete - Tag Assassin, is a simple yet powerful plugin to delete those unused and unwanted tags.
AJAX-based table manager for WordPress. It is built using the excellent data grid from DrasticTools.
This plugin used for add edit delete and listing module at admin side.Also user can search and sort records.
This plugin allows you to delete Posts, Pages and Comments without moving them to Trash first. Additionally it restores all Are you sure? questions.
Automatically deletes all spam comments older than 15 days.
Find and delete all thumbnails from your Media Library
Automatically removes all non-featured image attachments from posts.
This plugin will allow your users to delete their own account without any need for interaction on the administrator's behalf.
This plugin will help you to manage your upload folder, identify useless files and remove them and save space.
Disable Site Delete plugin completely disables the site/blog deletion by a non network administrator
Empty widget areas with the click of a button
The Delete Delete Site Plugin removes the "Delete site" link from your WordPress multisite admin panel
Update (17. November 2008): I keep this plugin here for reference but since WordPress 2.7 there's a [Plugin Installer](http://codex.wordpress.org/Vers
This plugin allows you to delete content from your WordPress site/blog.
An extremely simple plugin which removes accumulated error log files from your web space.
Removes blacklisted html tags and attributes.
Allows bloggers to be more transparent to their readers by allowing them to notify readers the updations made in their blogs.