404 Notifier - Gives you a log of all your 404 errors so you can see why your readers are ending up on broken pages.Admin Dropdown Menus - Make your crowded admin panel menus neat and orderly by turning them into dropdown menus.
Admin Panel Comment Reply - Adds a â€œreply to commentâ€ option in the comments section of the admin area.
Ajax Spell Checker - Uses a combination of dictionaries to check your posts.
Auto-hyperlink URLs - Gives you several options for having URLs automatically turn in to hyperlinks.
AWSOM Pixgallery - Designed to allow artists and webcomic creators to create a portfolio of their artwork.
Batch Categories - Adds a page to the category management, showing all the posts that belong to a category making it easier to add to another category, or when using an import tool from another blog.
Custom Admin Menu - Gives you the power to rename, hide or move just about anything you want in the admin area.
Custom Write Panel - Allows you to customize the â€œWriteâ€ panel of WordPress. Hide things you don't need such as â€œPost Passwordâ€ and add things you feel you may need.
Dashbar - Let admins have admin access while working in the frontend of the blog without having multiple windows open.
Dashboard Editor - Ever wanted to change the Dashboard to be more useful? This is the plugin you need.
DashNote - Adds a post-it note feature to the dashboard to jot down notes to yourself.
Digital Fingerprint - Adds a digital fingerprint to your posts so you can search the web to see if your content has been scraped.
Domain Mirror - Will allow one WordPress install to be accessed from multiple domains and will even change the name and URLs based on the address people access it with.
Download Counter - Counts and tracks the downloads of all your files.
Email Users - This plugin allows you to mail registered users on your blog based on their role.
Enforce WWW Preference - Provides 301 redirects to queries with /index.php and enforces your use or non-use of www to make sure your search engine indexing is uniform.
Excerpt Editor - Gives you more control over the excerpts such as length and auto creation.
FeedBurner FeedSmith - Make sure all your RSS feed sbscribers get counted along with the ones signed up via FeedBurner.
Fix Database - Will check your WordPress database for errors and attempt to fix them.
Genki Announcement - Allows you to add an announcement before your first post without editing your themes, can even run on a timer.
Genki Pre-Publish Reminder - Forget to set your categories before you publish? Write yourself a reminder!
Google Analyticator - Inserts Google Analytics on every WordPress page
Google Sitemaps Generator - Will create a Google compliant sitemap of your blog.
GT Post Approval - Adds â€œApproveâ€ and â€œRejectâ€ buttons to the administrators view on all posts, very handy for blogs with multiple authors.
Instant Update - Will handle the tedious chore of upgrading your WP install with just one-click.
Just Unzip - Upload a zip folder from the Write page; this plugin unzips the contents and associates them with the current post.
Khanh's Instant Notepad (KIN) - Allows you to jot notes to yourself on a notepad.
Leprakhauns Word Count - Adds a Java powered word counter to your editing page, very useful for writers working to a word count on professional blogs.
Mass Post Manager - Allows you to move or delete all the posts in a category at once.
Mutliply - Allows you to control multiple blogs from one administrator.
NextGEN Gallery - Adds an image gallery to your control panel and can even add a flash gallery.
OneClick Install - Adds an extremely powerful uploader and installer for plugins and themes to WordPress, eliminates the need to unzip or FTP!
Page Link Manager - Allows you to easily rearrange pages, hide them, and move them at will.
Permacop - Allows you to redirect any URL to another.
Post2Page - Write a post that should really be on permanent display? Turn it in to a page with this plugin and have it handle the URL redirects to boot.
PlugInstaller - Point this plugin to a new plugin you want on the web, it takes care of obtaining it, uploading it and unpacking it.
podPress - Numerous features for bloggers wishing to add podcasts to their WordPress install. Previews, RSS feeds, adding cast to posts, and many, many more.
Search and Replace - Search all your posts at once for specified text, quickly replace it.
Share This - Adds multiple social bookmarking links and an e-mail-this function in one handy button.
Simple Pop-up Images - Add a thumbnail image to your post; when the user clicks on it, they get a larger pop-up of the picture.
Simple Tagging - Simplifies the tagging process to drop down menus, can import from your current tagging plugins.
Site Unavailable - Puts up a message your site is down, customize the message, all the while, the admins can still log in.
Throttle - Monitors your bandwidth and limits non-essential items during heavy load times to help performance.
Wikipedia-NoFollow - Written in response to Wikipedia's implementing a â€œnofollowâ€ rule to their outgoing links, a plugin to add nofollow to links you give to Wikipedia pages.
WordPress Mobile Edition - Strips your blog down for easy reading on phones and PDAs.
WordTube - Why use YouTube when you can host and stream your videos as you please? Includes a flash player.
WP Grins - Adds clickable smilies to both the administration area and comments section at once.
WPAds - Add rotating banner and text ads to any position you define in your blog.
WP-Custom Login - Allows you to modify the user login page logo to an image of your choice to allow you to brand your site more completely.
WP- DBManager - Gives you the power to optimize the database, back it up, restore, delete the backup database , drop emptied tables and run selected queries.
WP-phpMyAdmin - Gives you quick access to your PHP databases directly from the WP admin area without haveing to login to phpMyAdmin. Very handy.
WP Plugins Tracker - Will verify all of your plugins are the latest version by checking them against the wp-plugins-db.org database.
WP Super Edit - Gives you more control over the Visual editor including emoticons, layers, style attributes and more.
WP-Table - Allows you to add a table directly in the Visual mode or import from a spreadsheet. (via)