Here are some of the most useful Plugins for virtually any type of WordPress-powered site. Plugins are created by developers in the wordpress community. They help make your WordPress website much more powerful by adding more functionality while keeping the WordPress core clean. Here is a list of 10 great WordPress plugins.
Google Analytics for WordPress
If you want a way to monitor your on-site traffic easily then this plugin will be a sure winner in your book. Once you sign-up for a Google Analytics account, this plugin will automatically add the analytics code to all pages of your website.
The point of using FeedBurner is to get some statistics on how many people subscribe to your site. But what point are statistics unless they are accurate? This plugin will redirect anyone trying to access your WordPress feed directly to your FeedBurner feed address. Set-it-and-forget-it.
There is nothing more important and vital to your WordPress-powered site than thedatabase. If your entire server was destroyed, but you had a recent backup of your database, you would be fine.
All in One SEO Pack
automatically generates an appropriate meta description tag for each Posts and Pages based on their content.It allows you to create unique title/description and other important meta data for each page of your site.
Google XML Sitemaps
This plugin in will generate a special XML sitemap for your website, that will help the Google search engine more easily index and priorities your website/blog.
W3 Total Cache
Boosts the performance of your site (i.e., how fast your page loads) by combining a variety of techniques: file caching, database query caching, minifying/compressing/combining files, CDN integration, and more.
The Lightbox Gallery plugin changes the view of galleries to the lightbox.
WP Maintenance Mode
Adds a splash page to your site that lets visitors know your site is down for maintenance. Full access to the back- & front-end is optional.
Import posts, pages, comments, custom fields, categories, and tags from a WordPress export file.
Great for your blog. Similarity displays a list of posts similar to the current post with similarity being determined based on tags, categories, or both