Password Protected的作者是Ben Huson，目前有200,000+个有效安装。已经Tested with 5.4.1版本的wordpress。
A very simple way to quickly password protect your WordPress site with a single password.
This plugin only protects your WordPress generated content. It does not protect images or uploaded files so if you enter and exact URL to in image file it will still be accessible.
Password protect your WordPress site with a single password.
Option to allow access to feeds.
Option to allow administrators access without entering password.
Works with Mark Jaquith’s Login Logo plugin.
Works with the Uber Login Logo plugin.
Please note, this plugin works by setting a cookie to allow access to the site. If you are using a caching plugin or web hosting such as WP Engine that has in-built caching, you will need to configure the caching service to be disabled if the Password Protected cookie is set.
If you would like to translate this plugin you can easily contribute at the Translating WordPress page. The stable plugin needs to be 95% translated for a language file to be available to download/update via WordPress.