WP Facebook is the ultimate Facebook plugin for your WordPress blog. It integrate Facebook’s Social Plugins into your WordPress blog using WP Facebook’s built-in, customizable widgets.

It allow users to register on your site by having them log in through Facebook! Make it easy for users to connect to your WordPress blog and allow them to use advanced Facebook-exclusive features like attaching comments when using the “Like” button, showing which of your user’s friends are connected to your website, and allowing them to comment on posts on Facebook!

If users are logged in via Facebook, you can choose to replace WordPress comments with Facebook’s Comment System, bringing the discussion to the place where people are actually talking – Facebook! Spark some conversation by taking the convo to your users’ friends and families.

Want to place a Like button directly in an article? Simply use a shortcode to quickly place the button exactly where you want it! All social plugins have shortcode support enabled.

Pricing: FREE
Requirements: WordPress 2.8+
Source: http://upthemes.com/2010/06/wp-facebook-plugin/

WP Minify integrates the Minify engine into your WordPress blog. Once enabled, this plugin will combine and compress JS and CSS files to improve page load time.

WP Minify grabs JS/CSS files in your generated WordPress page and passes that list to the Minify engine. The Minify engine then returns a consolidated, minified, and compressed script or style for WP Minify to reference in the WordPress header.

Pricing: FREE
Requirements: -
Source: http://wordpress.org/extend/plugins/wp-minify/

BlinkWP features a personal portfolio and (not so) personal blog. Built-in with an unique design and functions, blinkWP is easy to edit and to make it your own.

Pricing: $32
Requirements: -
Source: http://themeforest.net/item/blinkwp-unique-portfolio…

Most of the “related posts” plugins out there while they provide some kind of control on how to create related posts, they all rely on an algorithm and the results are automatic. With Custom Post Relationships (CPR), you get total control as you can manually select the posts that you want to relate.

Pricing: FREE
Requirements: -
Source: http://wordpress.org/extend/plugins/custom-post-relationships/

Blur WordPress Theme is perfect for any creative company, studio or freelancer. The main focus of the template is for portfolio and blog sites, but it is suitable for any other type. Blur is styled with some of the latest CSS3 techniques and enhanced with jQuery, but it degrades gracefully, which means it works just fine in older browsers.

The template features an awesome slideshow with navigation and some custom made scripts for pleasant user experience. The package comes with a layered and organized PSD file, which you can use to customize the design as you wish.

Pricing: $14
Requirements: -
Source: http://themeforest.net/item/blur-portfolio-and-blog-template…

Make your WordPress 3.0 site even more awesome. With East Post Types Plugin, you can create WordPress custom post types on the fly with an easy to use interface. Then manage custom fields and categories for your post types.

Create custom fields without having to create keynames and values. Output custom types simply by using the preformatted template tag for your field or create your own. One single call to display any field in an output. Additionally, once you have created a custom field this field is now available every time you edit/create a custom post type. This feature saves you time and gets rid of the frustration associated with custom fields that cause many people not to use them. Many out of the box field types available, or create your own through the plugin API.

Pricing: FREE
Requirements: -
Source: http://www.wpeasyposttypes.com/

WP-Syntax provides clean syntax highlighting using GeSHi — supporting a wide range of popular languages. It supports highlighting with or without line numbers and maintains formatting while copying snippets of code from the browser.

WP-Syntax avoids conflicts with other 3rd party plugins by running an early pre-filter and a late post-filter that substitutes and pulls the code snippets out first and then pushes them back in with highlighting at the end. The result is source code formatted and highlighted the way you intended.

Pricing: FREE
Requirements: -
Source: http://wordpress.org/extend/plugins/wp-syntax/

Galeria is a single page theme, suitable for anyone that wants to showcase his work. Photographers, Graphic and Web Designers will find it very useful. It includes two color variations (Dark and Light) and two portfolio options (Gallery and Slider). The slider used features 9 incredible transition effects.

This theme is well documented and really easy to use. It is Widget ready and includes custom shortcodes for easy edition.

Pricing: $27
Requirements: -
Source: http://themeforest.net/item/galeria-single-page-wordpress-portfolio…

LightBox Photos, Movie and Image Showcase by foliothemes.com is a Portfolio Blog with an elastic grid for ALL portfolio categories. Stretch your window and the image items fall into place. Easy to maintain and has numerouse php and jquery enhancements. Theme Switcher, Option Page, 5 Widget Areas, Jquery Enhanced.

Pricing: $32
Requirements: -
Source: http://themeforest.net/item/lightbox-image-movie-showcase…

WordPress and jQuery are both very famous for their plugins. In the case of jQuery, plugins allow developers to extend the library’s capacities in order to create beautiful effects. In WordPress, they allow anyone to benefit from the work of others, as they come under the form of a module that you can easily activate from within the administration interface, and start using right away.

Creating one of those modules is not that difficult, but if you are not familiar with their syntax, it could end up being a headache. There are many jQuery plugins that have been transferred into a WordPress one already, but what can you do when it is not the case? How do you do when you have found the perfect jQuery plugin for your latest site, but it is not yet available as a WordPress plugin?

In this tutorial: How to turn any jQuery plugin into a WordPress one, we’ll see how you can easily create a WordPress plugin from a jQuery one. We’ll review what a jQuery, or a WordPress plugin is actually made of, so we’ll find the elements they both have in common. From there, we’ll show how it leads us to perform some simple operations to allow us to benefit from our jQuery plugins in a WordPress template.

Source: How to turn any jQuery plugin into a WordPress one