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.
Translate your WordPress powered website using Transifex.
Digitally certify your content to prove copyright. Shows copyright notice in your posts, with optional license/attribution. Copy-protects, and more...
Block comment spam and fake registrations by adding the powerful CAPTCHA protection of Securimage-WP to your WordPress site.
Enable Instant Articles for Facebook on your WordPress site.
Widget Post Slider to display posts image in a slider from category.
A simple plugin that creates a widget to display the Google+ Badge.
Create interactive images in WordPress. Perfect for floor plans, trade shows, group photos, product features, and annotated image tutorials.
A plugin to embed a preview of a link, similar to facebook
Manage WP sites from one central location! Much more than just updates, get nearly complete control of all your sites from your self-hosted Dashboard.
Provides a secure connection between your MainWP Dashboard and your WordPress sites. MainWP allows you to manage WP sites from one central location.