Adds the Description and Keywords XHTML META tags to your blog’s front page and to each one of the posts, static pages and category archives. This operation is automatic, but the generated META tags can be fully customized. Also, the inclusion of other META tags, which do not need any computation, is possible. Please read the tips and all other info provided at the configuration panel.
Plugin Documentation: http://wordpress.org/extend/plugins/add-meta-tags/
List Category Posts allows you to list posts from a category into a post/page using the “catlist” shortcode. This shortcode accepts a category name or id, the order in which you want the posts to display, and the number of posts to display. You can use “catlist” as many times as needed with different arguments.
Plugin documentation: http://wordpress.org/extend/plugins/list-category-posts/
AMP plays mp3, flv, mov, mp4, m4v, m4a, m4b, 3gp, avi, asf and wmv hypertext links directly on your webpage. Adds buttons to the post editor for embedding swf movies including Google Video etc. Edit all player options in Settings > AMP.
Sidebar widget to list all authors of a blog.
Plugin Documentation: http://wordpress.org/extend/plugins/wp-authors/
WP-SNAP! (WordPress System for Navigating Alphabetized Posts) creates an alphabetical listing of post titles on a Category or Page template file. Navigation through the listings WP-SNAP! generates is accomplished using the alphabet itself. (For example, if a site visitor clicked on the letter D, any post titles that began with that letter would be showcased.) WP-SNAP! will work on any WordPress 2.5 or higher site, but is particularly useful managing glossaries, indexes, reviews, or directories.
WP-SNAP! offers three different navigational styles and integration with both custom permalinks and the WordPress loop. Plugin options can be managed both site-wide and on the template itself with results either restricted to one category or broadened to include child categories as well. The clever web developer should have no problem seamlessly integrating WP-SNAP! into their latest project. Options have also been added to allow the customization of css class names and the appearance of html mark-up.
Plugin Documentation: http://wordpress.org/extend/plugins/wp-snap/
This plugin gives every widget an extra control field called “Widget logic” that lets you control the pages that the widget will appear on.
The text field lets you use WP’s Conditional Tags, or any general PHP code.
There is also an option to add a wordpress ‘widget_content’ filter — this lets you tweak standard widgets to suit your theme without editing plugins and core code.
Plugin Documenation: http://wordpress.org/extend/plugins/widget-logic/
Manage the access to your posts, pages, categories and files.
Plugin Documentation: http://www.gm-alex.de/projects/wordpress/plugins/user-access-manager/
Adds a button which easily lets you retweet your blog posts.
Plugin Documentation: http://wordpress.org/extend/plugins/tweetmeme-button/
Allows an editor to publish an “issue”, which is to say, all pending posts with a given series. Until a series is published, all posts with that series will remain in the pending state. Credit really needs to go to Jonathan Brinley for his original Issue Manage plugin because all I did was modify it for use with series rather than categories. Also NOTE that this REQUIRES Organize Series to be installed or something could go wrong…
Plugin documentation: http://wordpress.org/extend/plugins/organize-series-publisher/