Used by millions, Akismet is quite possibly the best way in the world to protect your blog from spam. It keeps your site protected even while you sleep. To get started: activate the Akismet plugin and then go to your Akismet Settings page to set up your API key.
Banner Effect Header is a plugin to integrate banners made with Banner Effect software on your WordPress site.
You can now add a correct login & logout link in your WP menus.
Don't like Howdy? Change it to whatever you want. Wordpress 3.3+ compatible!
This plugin improves SEO using sitemaps for best indexation by search engines like Google, Bing, Yahoo and others.
By Arne Brachhold.
Allows you to create customizable magazine-style pull-quotes without duplicating text in your markup or feeds.
By Stephen Rider.
Bring the power of the WordPress.com cloud to your self-hosted WordPress. Jetpack enables you to connect your blog to a WordPress.com account to use the powerful features normally only available to WordPress.com users.
See which plugins are slowing down your site. Create a profile of your WordPress site's plugins' performance by measuring their impact on your site's load time.
Create and manage Polldaddy polls and ratings in WordPress
By Automattic, Inc..
Easily add one or more posts to any page using simple shortcodes. Supports categories, tags, custom post types, custom taxonomies, and more.
By IvyCat, Inc..
By Nsp Code.
Allow your visitors to comment, login and register with 30+ social networks like Twitter, Facebook, LinkedIn, Instagram, Вконтакте, Google or Yahoo.
By Claude Schlesser.
This plugin automatically detects tags to place against posts using existing tags as well as a simple formula that detects common tag formats such as Acronyms, names and countries. Whereas other smart tag plugins only detect a single occurance of a tag within a post this plugin will search for the most used tags within the content so that only the most relevant tags get added.
By Rob Reid.
Themes the WordPress login, registration and forgot password pages according to your theme.
By Jeff Farthing.
Backup and restore: take backups locally, or backup to Amazon S3, Dropbox, Google Drive, Rackspace, (S)FTP, WebDAV & email, on automatic schedules.
Show or hide widgets depending on the section of the site that is being viewed.
By Kaspars Dambis.
Control widgets with WP's conditional tags is_home etc
By wpchefgadget, alanft.
A plugin that give you control for show or hide widgets on WordPress Categories, Posts and Pages.
Integrates reCAPTCHA anti-spam solutions with wordpress
Lists down Posts filtered by category. You can show thumbnail, modify the HTML structure of the widget and do almost whatever you want. Access it from the Widgets option under the Appearance. The shortcode is [wp_cpl_sc] Check the settings page for more info or check the documentation here
Shows all installed plugins with a signle shortcode.
[pluginlist] to show all,
[pluginlist show="active"] to show only activated plugins and
[pluginlist show="inactive"] to show all inactive plugins.
By H.-Peter Pfeufer.