Steve

Adds the ability to enter contact information and output the details in your posts, pages or templates.
Use the shortcode <code>[contact type="phone"]</code> to display any of the contact details, or use the function call <code><?php if ( function_exists( 'contact_detail' ) ) { contact_detail( 'phone' ); } ?></code>.
Once you have defined a contact email address, use the shortcode <code>[contact type="form"]</code> to output the contact form.
Languages: Also available in Español (Spanish) and українська (Ukrainian by Michael Yunat).

Contact Details

Adds the ability to easily enter and display contact information.

lili0allen

With this plugin, you can create your own variables and use them in WordPress site. It is much more convenient when you update your variables. For example, your contact phone number displays in four places on your site. When you need to update your phone number, you have to find each of them and edit them one by one. With this plugin, you only need to edit it once at the control panel. You can put the shortcode anywhere on your website.

Custom Variables

Custom Variables provides an convenient way of setting WordPress global options. You can use it anywhere on your WordPress site.

Contact Details vs Custom Variables