Ruven

This plugin provides a function to output links to share a post to Facebook, Twitter, and Google+.
Selected themes by Ruven will display the links automatically when the plugin is activated. 
In other themes you will have to edit the templates in your theme in order to output the links.
Here an example of outputting the links in as list:
<pre><code><?php
if(function_exists('ruven_sharing_links')) {
 echo '<ul class="sharing-list">';
 $sharing_links = ruven_sharing_links();
 foreach($sharing_links as $sharing_link) {
 echo "<li>$sharing_link</li>";
 }
 echo '</ul>';
}
?>
</code></pre>
<h4>Usage</h4>
<pre><code>$sharing_links = ruven_sharing_links( $get_array, $include, $open_in_new_tab, $class );
</code></pre>
<h4>Parameters</h4>
$get_array 
(bool) (optional) If you want the return value to be an associative array (title, URL) or an array of HTML links. By getting an associative array, you are able to customize the output more.
Default: false
$include 
(array) (optional) If you don’t want all platforms (Facebook, Twitter, and Google+) included, you can specify here which you want specifically to be returned. E.g. <code>array('Twitter', 'Facebook')</code> would only return Twitter and Facebook links.
Default: array()
$open_in_new_tab 
(bool) (optional) If you want the sharing dialog to be opened in a new tab/window or not.
Default: true
$class 
(array) (optional) Classes you want to add to the links. E.g. <code>array('sharing-button', 'big-button')</code>
Default: array()
<h4>Return Value</h4>
If the value of <code>$get_array</code> is <code>false</code> (default), the function returns an array of HTML links.
If the value of <code>$get_array</code> is <code>true</code>, the function returns an associative array of the title (e.g. “Twitter”) and the URL to share the post.

Ruven Themes: Sharing Links

RT Sharing Links provides a function to output links to share a post to Facebook, Twitter, and Google+.

kubiq

Easily use <code>[better_share_buttons]</code> shortcode anywhere you want. 
Create your own styles, or choose from existing ones. 
This plugin is optimized for fastest websites – it will not load any JS files and it will load CSS file only when it is needed.
This plugin allows you to:
<ul>
<li>create multiple social share icon styles</li>
<li>use shortcode to display share icons anywhere you want</li>
<li>create your own styles in your theme folder</li>
<li>customize basic settings directly in admin</li>
<li>use different icons for social networks</li>
</ul>
<h3>Hooks</h3>
customize wrapper classes
<pre><code>add_filter( 'share_buttons_classes', function( $classes, $share_buttons_settings, $share_buttons_id ){
 $classes[] = 'my-custom-class';
 return $classes;
}, 10, 3 );
</code></pre>
 
customize wrapper CSS output
<pre><code>add_filter( 'share_buttons_styles', function( $style, $share_buttons_settings, $share_buttons_id ){
 $style[] = '--my-var: 50px';
 return $style;
}, 10, 3 );
</code></pre>
 
customize html form more button
<pre><code>add_filter( 'better_share_buttons_more', function( $html, $share_buttons_settings, $share_buttons_id ){
 // replace SVG icon path with a custom one
 $html = str_replace( 'M18 14V8h-4v6H8v4h6v6h4v-6h6v-4h-6z', 'M18.2 4.2C18.2 3 17.2 2 16 2s-2.2 1-2.2 2.2v9.7H4.2C3 13.8 2 14.8 2 16s1 2.2 2.2 2.2h9.7v9.7c0 1.2 1 2.2 2.2 2.2s2.2-1 2.2-2.2v-9.7H28c1.2 0 2.2-1 2.2-2.2s-1-2.2-2.2-2.2h-9.7V4.2z', $html );
 return $html;
}, 10, 3 );
</code></pre>
 
add custom icon for any network
<pre><code>add_filter( 'share_buttons_icons', function( $icon, $slug, $share_buttons_settings, $share_buttons_id ){
 if( $slug == 'facebook' ){
 // add custom SVG path and you will be able to select it in admin
 $icon[] = 'M29.3 16c0-7.4-6-13.3-13.3-13.3C8.6 2.7 2.7 8.6 2.7 16c0 6.5 4.6 11.8 10.7 13.1V20h-2.7v-4h2.7v-3.3c0-2.6 2.1-4.7 4.7-4.7h3.3v4h-2.7c-.7 0-1.3.6-1.3 1.3V16h4v4h-4v9.3c6.7-.7 11.9-6.4 11.9-13.3z';
 }
 return $icon;
}, 10, 4 );
</code></pre>
 
control shared URL
<pre><code>add_filter( 'better_share_buttons_permalink', function( $url ){
 // ...
 return $url;
});
</code></pre>
 
control shared title
<pre><code>add_filter( 'better_share_buttons_title', function( $title ){
 // ...
 return $title;
});
</code></pre>
 
control HTML output for any network
<pre><code>add_filter( 'better_share_buttons_link', function( $html, $slug, $share_buttons_settings, $share_buttons_id ){
 if( $slug == 'facebook' ){
 $html = str_replace( 'https://facebook.com/sharer/sharer.php?', 'https://facebook.com/sharer/sharer.php?xxx=yyy&', $html );
 }
 return $html;
}, 10, 4 );
</code></pre>
 
add something before or after your share buttons
<pre><code>add_action( 'before_share_buttons', function( $share_buttons_settings, $atts ){ // or after_share_buttons
 if( $atts['id'] == 12345 ){
 echo '<div class="before-share-buttons">' . __( 'Sharing is caring', 'theme' ) . '</div>';
 }
}, 10, 2 );
</code></pre>
 
<h3>Create your own styles</h3>
Create new folder <code>better-share-buttons</code> inside your theme folder and put iniside style files <code>xyz.css</code> and <code>xyz.json</code>.
Style <code>xyz</code> will automatically appear in the admin settings.
Content of JSON file is used to manipulate settings in admin when you select that style:
<pre><code>{
 "visible_buttons": 999,
 "bsb_mx": 0,
 "bsb_my": 0,
 "bsb_px": 5,
 "bsb_py": 5,
 "bsb_br": 0,
 "bsb_fz": 0,
 "bsb_iz": 32,
 "bsb_lls": 0,
 "bsb_lrs": 0
}
</code></pre>
Content of CSS file should define your style:
<pre><code>.better_share_buttons.bsb-style-xyz{}
</code></pre>

Better Share Buttons

Easily use [better_share_buttons] shortcode anywhere you want.

Ruven Themes: Sharing Links vs Better Share Buttons