PressMaximum

<p>This plugin will add Topbar Countdown on the top of your website that help you launch an offer or a promotions.</p>
<h3>Featured</h3>
<ul>
<li>2 Countdown type: Fixed timer for all visits and Start the countdown when first visits.</li>
<li>Custom page or post type to show.</li>
<li>Custom message.</li>
<li>Custom countdown box title.</li>
<li>Custom Input coupon box.</li>
<li>2 Countdown box title: Vertical and Horizontal.</li>
<li>Advanced color settings.</li>
</ul>


Topbar Countdown

Add a banner on the top of screen with countdown clock and custom message.

iTRON

<p>The Site Options plugin is a simple and free product for adding your custom site options on default page Settings -> Reading.<br />
 Just define needed settings in your functions file. <a href="http://nebster.net/en/plugins/site-options/" title="Site Options instructions" rel="nofollow ugc">More instructions</a>.</p>
<p>Adding your custom options</p>
<pre>
    add_action( 'init', 'custom__site_options', 10 );
    function custom__site_options(){
        global $wpto;
        if ( $wpto )
        $wpto->fields = array ( 
            'section_one'   =>  array( array( 'Header - First Settings', 'description will come' ), array(
                'f_number'  => array( 'number', 'A Number' ),
                'f_text'    => array( 'text', 'Simple text' ),
                )),
            'section_two'   =>  array( array( 'Header - Additional settings', 'description will soon' ), array(
                'f_gallery' => array( 'gallery', 'Awesome gallery' ),
                'f_chbox'   => array( 'checkbox', 'Are u checked?' ),
                )),
        );  
    }
 </pre>
<p>Access in the theme files</p>
<pre>
        global $wpto;
        echo $wpto->getOption( 'section_one::f_text' ) ;
 </pre>
<h4>Field types support</h4>
<ul>
<li>text</li>
<li>textarea</li>
<li>wysiwyg</li>
<li>checkbox</li>
<li>number</li>
<li>select</li>
<li>email</li>
<li>image</li>
<li>gallery</li>
<li>colorpicker</li>
</ul>


WP Site Options

The Site Options plugin is a simple and free product for adding your custom site options on default page Settings -> Reading.

Topbar Countdown vs WP Site Options