Google XML Sitemaps Generator – creates a sitemap of all articles on your WordPress blog. Helps Google and other search engines index every article you write.
Permalink Redirect – replies a 301 permanent redirect, if requested URI is different from entrys (or archives) permalink. It is used to ensure that there is only one URL associated with each blog entry.
All in One SEO Pack – Optimizes your WordPress blog for Search Engines (Search Engine Optimization).
SEO Title Tag – Optimize your wordpress title tags for search engines. Mass edit the title tags of posts, pages, category pages, tag pages etc.
Enforce www. Preference – will help preserve your permalinks by enforcing your no-www or yes-www preference and will strip off index.php from the ends of URIs.
Optimal Title – allows you to have your blog name tacked on to the end of the page title instead of having it appear first.
Quick META Keywords – will automatically add META Keywords tags to every single post based on categories under which the article is categorized.
Easy WordPress Navigation
Related Posts – Returns a list of the related entries based on active/passive keyword matches. Increase pageviews by providing targeted related content.
WP-PageNavi – Adds a more advanced page navigation to WordPress, which is very useful for navigation on index and category pages.
Evermore – Abbreviate all posts when viewed on multiple post pages. Helpful to create expandable posts summaries in WordPress. Combine with Less that changes the (more ) link so it displays the entire post, not just the part after the more.
Random Redirect – Allows you to create a link to a random post on your blog. Lets readers browse in a StumbleUpon-like fashion.
WordPress Mobile Edition – shows an interface designed for a mobile device when visitors come to your site on a mobile device.
Popularity Contest – keeps a count of your post, category and archive views, comments, trackbacks, etc. and uses them to determine which of your posts are most popular.
Landing Sites – When visitors is referred to your site from a search engine, it shows them related posts to their search on your blog.
Clean Archives – designed to display your archive listings in a clean and uniform fashion. It lists the Month / Year, the day of the month the article was published, the title of the article, and the number of comments that have been made on each article.
Custom Query String – set the number of posts (custom queries) for every single page on your website like categories, archives, or search results pages.
Feed List – very useful for adding other RSS feeds to your site.
Sidebar Widgets because it allows you to move things (widgets) around, in and out of your sidebar. Not required for WordPress 2.2 and above.
KB Advanced RSS Widget – a wordpress widget that gives you complete control over how RSS feeds are parsed for your sidebar.
Admin Drop Down Menu – eliminates the need for this double clicking on the Admin screens by allowing you to see the second level menu just by placing your mouse over a main menu.
InstantUpgrade – provides is a easy and safe way to upgrade your WordPress automatically with a single click.
Maintenance Mode Plugin – 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.
Theme Test Drive – allows you to safely test drive any theme on your blog as an administrator, while visitors continue to see the default one.
Advertising on WordPress
Ad Rotator – Rotates Ads randomly from a specified text file.
AdSense-Deluxe – is a WordPress plugin offering advanced options for managing the automatic insertion of Google AdSense or Yahoo Publisher Network (YPN) ads to your WordPress posts. More Google Adsense WP plugins.
Buy Me a Beer – allows your readers to donate money to you via PayPal on pretext of buying a beer.
WordPress BankRoll – offers to help you cut out the middleman by allowing advertisers to buy reviews directly on your blog.
WordPress Blog Translation
Global Translator – Translate your blog into multiple languages in a search engine friendly way.