Remove WordPress Overhead
Remove overhead from the HTML, speed up your website and disable widgets you don't use
Tag Plugin: disable widgets
Native WP Cleaner
Disable native widgets, clean head tag from RSS, RSD, WLW Manifest links, disable XML-RPC, cleanup…
Disable Widgets
Disable unused sidebar widgets.
Disable Dashboard Widgets
Easily Remove All Widgets from Dashboard for all users except the Administrator.