Download WP Require Auth at WordPress Plugins
I created a small scratch-an-itch plugin called WP-Requre-Auth a while ago. Its purpose is to disable access to a WordPress blog if a user is not logged in. I am guessing the download statistics for this niche plugin will not exactly skyrocket, but now it is at least findable.
The Trac site is still available for bug reports, feature suggestions and donations, but the plugin itself is now hosted in the WordPress plugins site.

