Some Wordpress plugins are often updated, which is good think. Plugins that are updated are 100% compatible with last Wordpress version and they also are the most secure possible. A plugin that has not been updated for a long time might not work with last Wordpress version and might create a security breach for you website.
Drive customers right to your website! The Local Search SEO Contact Page offers you an easy method of marking up your web page with Schema.
This plugin Adds Crazy Additional Password Protection and Security to your blog.
WordPress Admin plugin, complete customization of dashboard panels, logos, removal of menu items, custom menu's, plus google analytics
This plugin will customize your login screen. It replaces the default WordPress logo with your own super custom logo.
Set custom permalinks on a per-post, per-tag or per-category basis.
Customize wordpress logo,background image and Powered by wordpress.org link on wordpress login page.
This is a javascript plugin that helps you to write Browser specific css on your wordpress website
Bootstrap Collapse plugin will let you use Twitter Bootstrap Collapse plugin on wordpress with help of Short codes [bc_group] and [bc_collapse]