Dawi

This plugin has a configuration panel with options to add functionality to WordPress. There are general options, visual, even security.
<h4>Options</h4>
<ul>
<li>Easy Maintenance Mode</li>
<li>Disable automatic formatting</li>
<li>Remove RSD link</li>
<li>Remove wlwmanifest</li>
<li>Automatically generate the meta-description in the news</li>
<li>Shortcodes in Widgets</li>
<li>Hide login errors</li>
<li>Prevent direct file access to functions.php</li>
<li>Restrict wp-admin access to subscribers</li>
<li>Remove the WordPress version</li>
<li>Remove the WordPress version of the RSS</li>
<li>Disable auto-saving items</li>
<li>Add post thumbnails</li>
<li>Set as default to the HTML editor</li>
<li>Disable the default WordPress widgets</li>
<li>Remove margin-top automatically generated</li>
<li>Prevent WordPress to compress your jpg images</li>
<li>Remove Gallery Settings</li>
<li>Unlock buttons useful in the visual editor</li>
</ul>

Quick General Options

Configuration panel with multiple options to enable/disable features in WordPress.

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.

Quick General Options vs Contact Details