WP-Optimize is a wordpress 2.7+ database cleanup and optimization tool. It doesn’t require PhpMyAdmin to optimize your database tables. It allows you to remove post revisions, comments in the spam queue, un-approved comments within few clicks.

Additionally you can rename any existing username to another username too. WP-Optimize reports which database tables have overhead and wasted spaces also it allows you to shrink and get rid of those wasted spaces.

As example, if you have a post which is approximately 100KB data and you have 5 revisions of that post, the total space wasted is about 500KB. And if you have 100 posts similar to it, you have 50MB database space wasted.

Pricing: Free
Requirements: WordPress 2.7+
Source: http://www.ruhanirabin.com/wp-optimize/

The Google Ajax Translation WordPress plugin provides a quick, simple, and light way to add translation to your blog.

A “Translate” button can be added to the bottom or top of posts, pages, and/or comments. When the button is clicked, a popup window opens showing a list of available languages. You can choose which of the 43 languages to display in the Administration Panel. The list of languages can be shown as text, as flag icons, or as both.

Pricing: Free
Requirements: WordPress 2.8+
Source: http://wordpress.org/extend/plugins/google-ajax-translation/

OpenID is an open standard that allows users to authenticate to websites without having to create a new password. OpenID WordPress plugin allows users to login to their local WordPress account using an OpenID, as well as enabling commenters to leave authenticated comments with OpenID.

OpenID WordPress plugin also includes an OpenID provider, enabling users to login to OpenID-enabled sites using their own personal WordPress account. XRDS-Simple is required for the OpenID Provider and some features of the OpenID Consumer.

Pricing: Free
Requirements: WordPress 2.8+
Source: http://wordpress.org/extend/plugins/openid/

Using Category and Page Icons WordPress plugin, you can add icons (images) to sidebar of your site or blog into section of categories and pages.

Icons automatically appears at the sidebar, after assigning them to the pages or categories at icons admin menu. You do not need to insert some special code for inserting icons. Icons automatic inserting also during using these functions: wp_list_pages, wp_list_categories.

Pricing: Free
Requirements: -
Source: http://wpdevelop.com/wp-plugins/category-page-icons/icons-plugin/

If you have a Search box on your blog, Search Meter automatically records what people are searching for, and whether they are finding what they are looking for. Search Meter’s admin interface shows you what people have been searching for in the last couple of days, and in the last week or month.

Search Meter also shows you which searches have been unsuccessful. If people search your blog and get no results, they’ll probably go elsewhere. With Search Meter, you’ll be able to find out what people are searching for, and give them what they want by creating new posts on those topics.

You can also show your readers what the most popular searches are. The Popular Searches widget displays a configurable list of recent popular successful search terms on your blog, with each term hyperlinked to the actual search results. There’s also a Recent Searches widget, which simply displays the most recent searches. If you are happy to edit your theme, both of these functions are also available as template tags.

Pricing: Free
Requirements: WordPress 1.5+
Source: http://www.thunderguy.com/semicolon/wordpress/search-meter…

Testimonials Manager is a WordPress plugin that allows you to manage and display testimonials for your blog, product or service. It can be used to build your portfolio or to encourage readers to subscribe / buy your products.

You can edit the appearance of the testimonials page completely using the Custom CSS box. Making it match the overall look of your blog has never been this easy. Most importantly, you can rotate a predefined number of testimonials in your sidebar using WordPress widgets. Just drag and drop the Testimonials Manager widget in the correct sidebar, then give it a title and set the amount of testimonials to rotate.

Pricing: Free
Requirements: -
Source: http://www.profitplugs.com/testimonials-manager-wordpress/

User Photo WordPress Plugin allows a user to associate a profile photo with their account through their “Your Profile” page. Admins may add a user profile photo by accessing the “Edit User” page. Uploaded images are resized to fit the dimensions specified on the options page; a thumbnail image correspondingly is also generated.

User photos may be displayed within a post or a comment to help identify the author. Localizations included for Spanish, German, Dutch, Polish, Russian, French, Hungarian, Brazilian Portuguese, Italian, and Catalan.

Pricing: Free
Requirements: WordPress 2.7+
Source: http://wordpress.org/extend/plugins/user-photo/

Author Advertising Plugin allows blog admins to create a revenue sharing program utilising one of the many advertising programs out there i.e Yahoo, Google Adsense, Amazon, Allposters etc. It can also be used as a banner manager, author photo/website widgets…

Admin has complete control over: * The percentage of author adverts to admin adverts. * The user level that an author has to be before they get to participate in the revenue sharing program * Whether to randomise author ads on the front page of the blog. * The page that authors see before entering their publisher id. * Custom fields where you can collect additional information from your authors and display it. * The positioning and content of ads. * Up to three Author Advertising widgets. * The information that authors enter.

Pricing: Free
Requirements: WordPress 2.7+
Source: http://wordpress.org/extend/plugins/author-advertising-plugin/

Author Exposed is a simple Wordpress plugin that allows your visitors easy and elegant way to see more details about the post author.

This plugin does the same thing as the_author() tag only this time it’s linked to hidden layer (div). By clicking on the author link the layer pop’s up with author info gathered from the profile page, plus gravatar photo, if author email is assigned with one.

Pricing: Free
Requirements: -
Source: http://colorlightstudio.com/2008/03/14/wordpress-plugin-author-exposed/

Short URL Plugin allows you to create shorter URL’s and keeps track of how many times a link has been clicked. It’s useful for managing downloads, keeping track of outbound links and for masking URL’s. Clicking the Clear All Clicks button will reset the count for each entry.

It includes pagination of links, easy setup of htaccess (permalinks) and allows admins to pass variables to their redirects. It also allows customisation of the permalink.

Pricing: Free
Requirements: WordPress 2.7.1
Source: http://wordpress.org/extend/plugins/short-url-plugin/