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.
Tagline Rotator plugin randomly selects a tagline from a list of user-entered taglines.
Display asides in a widget. They can automatically be published to Twitter, Facebook, and any Status.net installation (like identi.ca).
Member Access is a WordPress plugin that allows an administrator to require that users be logged-in in order to view certain posts and pages.
A simple, light-wight, dark Wordpress admin dashboard theme.
Adding autocomplete functionality to the blog search input field. The values provided are the tags and categories used in the blog.
This plugin removes the Link URL that is enabled by default when images are uploaded to your WordPress blog.
A WordPress plugin that allows you to put custom HTML content in a widget for your dashboard.
Google Plus Plugin for WordPress allows you to Add Google Plus Widgets, Google Api Console required.