aliciagh

Easily search through all blogs into your WordPress MU posts by post title, post content or post author. 
WPMU Global Search can manage multiple search forms. Currently in the following languages:
<ul>
<li>English</li>
<li>Spanish (es_ES)</li>
</ul>
If you have created your own language pack, or have an update of an existing one, you can send <a href="https://codex.wordpress.org/Translating_WordPress" rel="nofollow ugc">gettext .po and .mo files</a> to me so that I can bundle it into WPMU Global Search.

WPMU Global Search

Adds the ability to search through blogs into your WordPress MU installation.

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.

WPMU Global Search vs Contact Details