A plugin with common features missed in WordPress, like favicon, meta tags, adding HTML to head and footer, WordPress e-mail from header filter, etc.
Relogo allows you to easily add support for the rel="logo" spec as described at relogo.org.
With this simple plugin you can add - in easy way - your HTML comment to all pages generated by WordPress. For example you can put your signature, or
Tweak the performance and automated settings of your WordPress wsite by checking or unchecking the numerous options on the settings page.
Add notices to the header or footer of your site and/or control notices on individual posts. Add script to your site or posts.
Includes custom HTML/CSS/JS code in the section on every blog in the network.