WP Uninstaller by Azed

If someone wants to leave your WordPress, let them go.

Deletes all unused tags, handy tool if you want to start over with a quick clean blog.

Auto deletes expires (prunes) posts after a certain amount of time. On a per category basis (single category, or all at once.

Stop non-admin users trashing, deleting or unpublishing your site-critical posts and pages. Lock content down in seconds - no code required.

Remove author pages and link authors to home page

The Media Hygiene plugin removes unused media from the WordPress library to free up space, reduce clutter, and improve server performance.