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.
Add custom JavaScript to your site from an editor in the WordPress admin
Google Organic Search Rich Snippets for Reviews and Rating. This plugin conforms to googles structured data algorithm.
Customize the WordPress admin pages by selectively removing interface elements.
Interface for easily defining additional JavaScript (inline and/or by URL) to be added to all administration pages.
Interface for easily defining additional CSS (inline and/or by URL) to be added to all administration pages.
Adds links to navigate to the next and previous posts when editing a post in the WordPress admin.
Use widgets, shortcodes, and/or template tags to easily retrieve and display custom field values for posts or pages.