Here are the most downloaded Wordpress plugins. These most popular Wordpress plugins are downloaded a lot simply because they are very useful, easy to setup and use.
A powerful yet user friendly plugin that automatically creates a table of contents. Can also output a sitemap listing all pages and categories.
Allows people to recommend/send your WordPress blog's post/page to a friend.
Creates a new widget to easily add mailing lists integration to a Genesis website. Works with FeedBurner, MailChimp, AWeber, FeedBlitz and more.
Boost CTR. Improve SEO & Rankings. Supports most of the content type. Works perfectly with Google, Bing, Yahoo & Facebook.
Send emails and upload contacts through SendGrid from your WordPress installation using SMTP or API integration.
AdSense Manager lets you manage your ads from within WordPress. With support for AdSense, AdBrite and many more.
Allows a user to associate a photo with their account and for this photo to be displayed in their posts and comments.
An easy, clean and simple way to add code snippets to your site.
Transposh adds best of breed translation support to wordpress, 92 languages are automatically translated and can be manually corrected with ease.
Pages/Categories/Custom dropdown navigation menus with nice jQuery effects. Comes with various customizable CSS themes!