Bestony

This plugin will support a new shortcode <code>[linkshare][/linkshare]</code> and new PostType LinkShare ,You can use these to share link to your friends.
<ul>
<li>you will can see a Link at your Admin Menu, then You can use this link to add New Share. </li>
<li>Click ‘Add New’,And Input Share title, Share Comment, Share URL,And Submit. </li>
<li>Create A new Page with content <code>[linkshare][/linkshare]</code>.</li>
<li>View the page.</li>
</ul>

LinkShare

use shortcode [linkshare][/linkshare] to show your website share on pages, posts or widgets.

lucdecri

wp_helper have 4 distinct plugin.
<ul>
<li>posttype_helper</li>
<li>taxonomy_helper</li>
<li>attachment_helper</li>
<li>adminpage_helper</li>
</ul>
each provides additional features that allow you to simplify the development of new posttype, new taxonomies, new pages and menu administrator, etc.
Detailed list of additional function is coming soon
You must check if wp_helper is actived before active your plugin, with similar code : {{{
if (defined(‘WP_HELPER’)) { 
 // your code here } else { // if defined(WP_HELPER) add_action(‘admin_notices’, ‘myplugin_noframework_notice’); }
function myplugin_noframework_notice(){ global $pagenow; if ( $pagenow == ‘plugins.php’ ) { echo ‘
To activate this plugin you must install and activate WP HELPER plugin .
‘; } }
}}}

WP Helper

It provides additional functions and feature that allow you to simplify the development in your plugin  new posttype, new taxonomies, new pages and me …

LinkShare vs WP Helper