Here a collection of most downloaded wordpress plugins to use in your blog.
Akismet checks your comments against the Akismet web service to see if they look like spam or not.
Automatically optimizes your WordPress blog for Search Engines (Search Engine Optimization).
A very fast caching engine for WordPress that produces static html files.
Just another contact form plugin. Simple but flexible.
Automatically add links on your posts, pages and RSS feed to your favorite social bookmarking sites.
The Google Analytics for WordPress plugin automatically tracks and segments all outbound links from within posts, comment author links
This plugin will create a Google sitemaps compliant XML-Sitemap of your WordPress blog.
FlippingBook WordPress Gallery plugin helps you to create Image Gallery with Page Flip effects on your blog.
NextGEN Gallery is a full integrated Image Gallery plugin for WordPress with a Flash slideshow option.
View, download and install plugins from WordPress.org Plugin Database from an AJAX’ed interface with a single click of the mouse.
Easy AdSense manages all aspects of Google AdSense for your blog: insert ads into posts and sidebar, and add a Google Search box. Easy and complete!
Smart Youtube plugin allows you to insert full featured YouTube videos into your post, comments and in RSS feed.
You can have simple, concise stats with no additional load on your server by plugging into WordPress.com’s stat system.
Returns a list of related entries based on a unique algorithm for display on your blog and RSS feeds.
Displays random posts and pages in sidebar. This increases the number of indexed pages and gives users an interesting way to browse your site.
This plugin makes it easy to add the appropriate meta robots tags to your pages
Adds a more advanced paging navigation your WordPress blog.
Help readers share, save, bookmark, and email your posts and pages using any service, such as Facebook, Twitter, Digg, Delicious and over 100 more.
WP e-Commerce is a Web 2.0 application designed with usability, aesthetics, and presentation in mind.
This plugin will check your posts, custom fields and the blogroll for broken links and missing images
Redirects the main feed and optionally the comments feed seamlessly and transparently to Feedburner.com.
Adds an AJAX poll system to your WordPress blog. You can also easily add a poll into your WordPress’s blog post/page.
WP-Cumulus displays your tags and/or categories in 3D by placing them on a rotating sphere.
Twitter Tools is a plugin that creates a complete integration between your WordPress blog and your Twitter account.
Twitter for WordPress displays yours latest tweets in your WordPress blog.
Sends a list of subscribers an email notification when new posts are published to your blog
Adds an AJAX rating system for your WordPress blog’s post/page.
This plugin makes it easy to add a line of content to the beginning or the end of all the articles in your feeds
ShareThis plugin allows users to add your post to many social bookmarking sites, or to send your post link via email, AIM, Facebook, MySpace and more.
On-demand backup of your WordPress database.
Enables most of the advanced features of TinyMCE, the WordPress WYSIWYG editor.
GD Star Rating plugin allows you to set up advanced rating and review system for posts, pages and comments in your blog
Powerful anti-spam plugin that eliminates blog comment spam. Finally, you can enjoy a spam-free WordPress blog! Includes contact form.
Automatically translates your blog in 34 different languages!
Enables you to display how many times a post/page had been viewed.
Allows users and admins to edit comments on a post. Users can edit their own comments for a limited time, while admins can edit all comments.
Adds a “Tweet This Post” link to every post and page, so your readers can share your blog entries on their Twitter accounts with ease.
Used to create a customizable rotating image gallery anywhere within your WordPress site.
This will enable ranking of your posts by popularity; using the behavior of your visitors to determine each post’s popularity.
Simple Tags is the successor of Simple Tagging Plugin and is THE perfect tool to manage perfectly your WP
Adds CAPTCHA anti-spam methods to WordPress on the comment form, registration form, or both.
Streams your activity from over 50 different sources to your blog.
Adds “Sidebar Widgets” panel under Presentation menu
FeedWordPress syndicates content from feeds you choose into your WordPress weblog.
Shrink, track and share any URL on the Internet from your WordPress website. Create short links suitable for Twitter using your own domain name!
Manages your WordPress database.
Displays a printable version of your WordPress blog’s post/page.
Redirection is a WordPress plugin to manage 301 redirections and keep track of 404 errors without requiring knowledge of Apache .htaccess files.
Scans your WordPress installation for security vulnerabilities.
This plugin adds a checkbox, “include this page in menus”, uncheck this to exclude pages from the page navigation that users see on your site.
Scissors enhances WordPress’ handling of images by introducing cropping, resizing, rotating, and watermarking functionality.
Themes the WordPress login pages according to your theme.
A widget that properly handles twitter feeds, including parsing @username, #hashtags, and URLs into links. Requires PHP5.
Allows easy and XHTML valid posting of videos from various websites such as YouTube, DailyMotion, Vimeo, and more.
BuddyPress is a suite of WordPress MU social networking plugins and themes.
Adds an attractive social bookmarking menu to your posts, pages, index, or any combination of the three.
This plugin allows you to cross-post your blog posts to your Facebook Wall. Your Facebook “Boxes” tab will show your most recent blog posts.
Allows people to recommend/send your WordPress blog’s post/page to a friend.
Posts a Twitter status update when you update your WordPress blog or post to your blogroll, using the Cligs URL shortening service.
Controls almost every aspect of your site’s meta-data, including advanced tagging, Analytics, and dozens of plugins. The best WordPress SEO solution!
This plugin changes the view of galleries to the lightbox.
Adds the TweetMeme button into your posts and RSS feed.
WordPress automatic upgrade allows a user to automatically upgrade the wordpress installation to the latest one.
Adds a widget that shows the most recent posts in a single category.
Adds a sidebar widget to let users login.
Really Simple CAPTCHA is a CAPTCHA module intended to be called from other plugins. It is originally created for my Contact Form 7 plugin.
A dream plugin for Podcasters using WordPress..
Post your videos and photo galleries/flash slideshows easily and in seconds.
Improve your web typography with: hyphenation, space control, intelligent character replacement, and CSS hooks.
Easily place Google Adsense and other ads on your WordPress blog. Simple to use, with powerful management and optimisation features.
Your post’s in audio – The easiest way to create speech recordings.
Create and manage PollDaddy polls from within WordPress.
Easily add breadcrumbs to your template!
Display the most recent comments or trackbacks with your own formatting in the sidebar.