Some Wordpress plugins are often updated, which is good think. Plugins that are updated are 100% compatible with last Wordpress version and they also are the most secure possible. A plugin that has not been updated for a long time might not work with last Wordpress version and might create a security breach for you website.
The Limit Access WP Plugin is a simple plugin that limits the number of IPs that can be accessing an account at the same time.
Perform a 301 redirect from an uppercase URL to the lowercase version for all non-admin, non-file URLs
Set up your custom registration form, add shortcodes into your posts, pages or sidebars and forget wp-login.php.
A (very) simple WordPress plugin for embedding template parts in your content.
This plugin automatically downloads the first remote image from a post and sets it as the featured image.
Set up and manage an HTTP 301/302 Redirect from the URL of any post type to another URL, either on your site or externally.