Saji

Mahdi Yazdani

MyPreview

A simple widget that allows you easily add icons for the most popular social networks to your sidebar or other widget area.

Social Network Widget

A simple customizable social networks widget for your sidebars.

Patryk Kachel

To use this plugin – your theme (or child theme) must support it. 
To display additional profiles for user you just need to use native WordPress function <code>the_author_meta( 'profile-name' )</code> where ‘profile name’ can be ‘twitter’, ‘facebook’, ‘googleplus’, ‘instagram’, ‘pinterest’.
Code example (with Font Awesome Icons):
<pre><code><?php
 $prefix_twitter_url = get_the_author_meta( 'twitter' );
 $prefix_facebook_url = get_the_author_meta( 'facebook' );
 $prefix_googleplus_url = get_the_author_meta( 'googleplus' );
 $prefix_instagram_url = get_the_author_meta( 'instagram' );
 $prefix_pinterest_url = get_the_author_meta( 'pinterest' );
?>
<?php if ( ! empty( $prefix_twitter_url ) ) : ?><a href="<?php the_author_meta( 'twitter' ) ?>"></a><?php endif; ?>
<?php if ( ! empty( $prefix_facebook_url ) ) : ?><a href="<?php the_author_meta( 'facebook' ) ?>"></a><?php endif; ?>
<?php if ( ! empty( $prefix_googleplus_url ) ) : ?><a href="<?php the_author_meta( 'googleplus' ) ?>"></a><?php endif; ?>
<?php if ( ! empty( $prefix_instagram_url ) ) : ?><a href="<?php the_author_meta( 'instagram' ) ?>"></a><?php endif; ?>
<?php if ( ! empty( $prefix_pinterest_url ) ) : ?><a href="<?php the_author_meta( 'pinterest' ) ?>"></a><?php endif; ?>
</code></pre>
You can see it in action here: https://pencil1.blogonyourown.com/author/robertsummer/

User Social Profiles

Plugin adds social fields to user profile in admin panel (Dashboard > Users).

Social Network Widget vs User Social Profiles