The Admin Menu Tree Page View  http://wordpress.org/extend/plugins/admin-menu-tree-page-view/ WordPress plugin adds a page tree to all your pages – directly accessible in the admin menu. This way all your pages will be available within just one click, no matter where you are in the admin area.

You can also add pages directly in the tree and you can quickly find your pages by using the search box.

Top features

• Change the order of your pages with drag-and-drop
• View all your pages – no matter where in the admin you are
• View the page hierarchy/the tree structure of your pages
• Compatible with WPML, so if you in WPML’s language menu have selected to view german pages, then only the german pages will vi visible in the admin menu tree too.
• Add pages directly after or inside another post – no need to first create the post and then select the parent of the page
• Adds link to view a page directly from the admin menu – you don’t have to first edit the post and from that page click the view link

Works perfect in CMS-like WordPress installations with lots of pages in a tree hierarchy.

Antispam Bee http://antispambee.com/

Kill spam
Antispam Bee is simple to use, has many options and filters. Does not store data on remote servers. Really.
Features
Very fast execution
Spam counter on dashboard
Anonymous and confidential
Trackback and pingback check
Saves no data on remote servers
No need to adjust any templates
Cleaning up after plugin removal
Accordingly no outgoing connection
Interactive statistics on dashboard… By Sergej Müller.

CKEditor For WordPress http://wordpress.org/extend/plugins/ckeditor-for-wordpress/

CKEditor is a text editor to be used inside web pages. It’s a WYSIWYG editor, which means that the text being edited on it looks as similar as possible to the results users have when publishing it. It brings to the web common editing features found on desktop editing applications like Microsoft Word and OpenOffice.

Disqus Comment System  http://wordpress.org/extend/plugins/disqus-comment-system/

You must configure the plugin to enable Disqus Comments.

Disqus, pronounced “discuss”, is a service and tool for web comments and
discussions. Disqus makes commenting easier and more interactive,
while connecting websites and commenters across a thriving discussion
community.
The Disqus for WordPress plugin seamlessly integrates using the Disqus API and by syncing with WordPress comments.
Disqus for WordPress
Uses the Disqus API
Comments indexable b… By Disqus .

Exclude Pages  http://wordpress.org/extend/plugins/exclude-pages/

This plugin adds a checkbox, “include this page in menus”, which is checked by default. If you uncheck
it, the page will not appear in any listings of pages (which includes, and is usually limited to, your
page navigation menus).
Pages which are children of excluded pages also do not show up in menu listings. (An alert in the editing screen,
underneath the “include” checkbox allows… By Simon Wheatley.

Facebook Like Button Plugin http://wordpress.org/extend/plugins/facebook-button-plugin/

Facebook Button Plugin allows you to add follow button in the most easiest and flexible way. By BestWebSoft.

Fast Secure Contact Form  http://wordpress.org/extend/plugins/si-contact-form/

This plugin allows a webmaster to easily create and add contact forms to WordPress.
The contact form will let the user send emails to a site’s admin, and also send a meeting request to talk over phone or video.
An administration panel is present, where the webmaster can create and preview unlimited forms.
By Mike Challis

Google Analytics for WordPress (added 2012-03-14)

http://wordpress.org/extend/plugins/google-analytics-for-wordpress/

Track your WordPress site easily and with lots of metadata: views per author & category, automatic tracking of outbound clicks and pageviews.
Has a Google Analytics account been setup for this domain name already?

Google Plus Badge http://wordpress.org/extend/plugins/google-plus-badge/

Google Plus Badge for Google+ Pages.

Google XML Sitemaps http://wordpress.org/extend/plugins/google-sitemap-generator/

This plugin will generate a special XML sitemap which will help search engines like Google, Bing, Yahoo and Ask.com to better index your blog.
With such a sitemap, it’s much easier for the crawlers to see the complete structure of your site and retrieve it more efficiently.
The plugin supports all kinds of WordPress generated pages as well as custom URLs. Additionally it notifies all major search … By Arne Brachhold.

Search and Replace http://wordpress.org/extend/plugins/search-and-replace/

A simple search for find strings in your database and replace the string. You can search in ID, post-content, GUID, titel, excerpt, meta-data, comments, comment-author, comment-e-mail, comment-url, tags/categories and categories-description. It is possible to replace the user-ID in all tables and the user-login for more security in the WordPress-Application ( more Informations ).
“Search and Repl… By Frank Bültge.

Under Construction  http://wordpress.org/extend/plugins/underconstruction/

The underConstruction plugin allows you to put up temporary page that users who are not logged in will see.
You can use this to build a site live, that can only be viewed by users who are logged in,
while others will get the ‘Under Construction’ page during construction

So the site can be worked on, but not shown to anyone without a login.
Ask search engines not to index this site.
Note: Neither of these options blocks access to your site — it is up to search engines to honor your request. (Usually it’s done, since the homepage isn’t public yet)

WordPress SEO by Yoast http://wordpress.org/extend/plugins/wordpress-seo/

Improve your WordPress SEO: Write better content and have a fully optimized WordPress site using the WordPress SEO plugin by Yoast.