Plugins are very helpful in extending the power of WordPress. Thanks to the WordPress community who have developed such a powerful, best and free plugins. I agree, that need of plugins may vary with the mode of business, target audience and several other factors.
But, today we have selected 12 Must Have WordPress Plugins that are really a need of every WordPress installation. Let have a look and you may be interested in other useful resources on High CTR WordPress Theme, Responsive jQuery Slider Plugins and Free Graffiti Fonts.