WordPress plugins are add-on tools that can extend the functionality of a WordPress website. Plugins can extend WordPress to do almost anything you can imagine. The majority of available plugins today are free but there are also premium plugins that require a payment.
There are thousands of plugins available for you to choose from. The following list is only a sample of what may find out there.
Following is a list of free common plugins:
All in one SEO pack – Optimizes your WordPress blog for Search Engines
XML Sitemap Generator – generates an XML sitemap that helps search engines like Yahoo, Google, Bing, and Ask.com to index your website .
Contact Form 7 – Allows you to add contact forms to your website without any.
Really Simple CAPTCHA – Really Simple CAPTCHA is a CAPTCHA module intended to be called from other plugins. It works together with the Contact Form 7 plugin.
AddThis Social Bookmarking Widget – Adds the AddThis Social Bookmarking Widget too all your posts
Some Premium Plugins that we like
WpTouch – automatically transforms your WordPress blog into an iPhone application-style theme
OIO Publisher – Ad management tool that allows you to customize where you want your ads, what size you want them, and how much they cost.