Akismet
Akismet checks your comments against the Akismet web service to see if they look like spam or not. You need a WordPress.com API key to use it. You can review the spam it catches under “Comments.” To show off your Akismet stats just put <?php akismet_counter(); ?>: in your template. See also: WP Stats plugin.
Crawl Rate Tracker
This is a plugin to log every visit by search engine robots, and show the results in different reports.
Easy Contact
Easy Contact is a simple, semantic contact form that utilizes the Sandbox design patterns. Insert using
[easy-contact].
It is really easy to implement, but it doesn’t give you the return e-mail of the sender. I have a patched version available for anyone on request.
Enforce www. Preference
Provides 301 redirects to queries with /index.php and enforces your use or non-use of www.
Google Integration Toolkit
Integrate Google services (Analytics, Webmaster Tools, etc.) with Your Blog.
I only use this for Google Webmaster Tools, as it does not have an opion to supress the GoogleAnalytics code for admin visits. See WP Google Analytics down this page.
Google XML Sitemaps
This plugin will generate a special XML sitemap which will help search engines like Google, Yahoo, Bing and Ask.com to better index your blog.
HIFI
HIFI is a head injection and foot injection plugin. It allows you to inject <script>, <style>, <meta> and any other code you want into your posts and pages. The code injected is page-specific, this means that only the pages you want will be affected.
ILWP Simple Link Cloaker
Maintains a list of ‘cloaked’ URLs for redirection to outside URLs. This plugin will allow you to enter a link such as “/irecommend/goodproduct” and create an .htaccess redirect to “http://goodproduct.com/affiliate-code”.
Invisible Defender
This plugin protects your registration, login and comment forms against spambots.
Login LockDown
Adds some extra security to WordPress by restricting the rate at which failed logins can be re-attempted from a given IP range. Distributed through Bad Neighborhood.
Maintenance Mode
Adds a splash page to your blog that lets visitors know your blog is down for maintenance. Logged in administrators get full access to the blog including the front-end. Navigate to Settings ? Maintenance Mode to get started.
MaxBlogPress Ping Optimizer
Saves your wordpress blog from getting tagged as ping spammer by installing this plugin. Adjust your settings here.
Ozh’ Who Sees Ads
Manage your Ads. Decide under when circumstances to display them. Make more money. For WordPress 2.5
Platinum SEO Pack
Complete SEO solution for your WordPress blog.
Quick Stats
Logs hits with referrer, ip, host, client and url information. RSS tracker feature lets you tracker your visitors in near realtime using an RSS reader software. I have made minor modifications to the code of this to display the IP of whoever views the QuickStats settings in the settings dashboard to quickly enter that IP in the list of IP’s not to log. I will get the patched version to anyone who wants to use it.
Sociable
Automatically add links on your posts, pages and RSS feed to your favorite social bookmarking sites.
TinyMCE Advanced
Enables advanced features and plugins in TinyMCE, the visual editor in WordPress.
Tweet old post
Plugin for tweeting your old posts randomly.
WordTwit
Posts updates to Twitter about entries automatically. Includes many configuarble options, statistics and more.
WP-DBManager
Manages your WordPress database. Allows you to optimize database, repair database, backup database, restore database, delete backup database , drop/empty tables and run selected queries. Supports automatic scheduling of backing up and optimizing of database.
WP-Optimize
This plugin helps you to keep your database clean by removing post revisions and spams in a blaze. allows you to rename your admin name also. Additionally it allows you to run optimize command on your wordpress core tables (use with caution).
WP Google Analytics
Lets you use Google Analytics to track your WordPress site statistics
WP Robot
Automatically post content related to any topic of your choice to your weblog. A really great autoposting plugin. A paid product, but I feel that it’s well worth it. Click the ad link on this page for more information or to purchase.
WP Tag PiG
This plugin allows the user manage and assign tags to blog posts.