Nur Hasan

WPBookmark is a wordpress plugin that allows users to bookmark posts/pages. 
you can selectively disable bookmarking feature on certain pages/posts.
Major new features in wpbookmark include:
<ul>
<li>user can maintain his own custom list of bookmarked posts or pages.</li>
<li>site owner can explicitly mention which pages/posts user can add to his/her bookmark list.</li>
</ul>
<h4>Pro Version</h4>
Pro Version includes some extra features and allows customization. Features include: 
1. Bookmark button position can be adjusted. 
2. Button color can be adjusted. 
3. Admin can monitor which pages/posts were bookmarked the most from admin dashboard. 
4. Admin can easily notify group of users who liked/bookmarked a post/page through email. 
5. Emailing can be queued to be delivered on a later time.
<ul>
<li>Go to: http://www.binnash.com/wpbookmark-pro/ to get the pro version</li>
</ul>

WPBookmark

WPBookmark is a wordpress plugin that allows users to bookmark posts/pages. you can selectively disable bookmarking feature on certain pages/posts.

bradvin

This plugin allows you to easily bookmark/favorite posts, pages and custom post types. When you ‘star’ a post a shortcut link will appear in the admin menu. 
Use this plugin if you constantly find yourself editing the same posts or pages, and are sick of showing the list of posts first, then finding the post, then clicking edit.
Steps to use
<ol>
<li>Go to Pages</li>
<li>Click the Star icon on a page.</li>
<li>Your page is now bookmarked!</li>
<li>Repeat for other pages you always edit.</li>
<li>Save time!</li>
</ol>
Plugin Features
<ul>
<li>Intuitive interface to bookmark posts using a star icon.</li>
<li>Zero settings! Activate and enjoy.</li>
<li>Works with posts, pages and any custom post types.</li>
<li>Dashboard widget listing all bookmarks.</li>
<li>Setting a bookmark is done in realtime with no page reload.</li>
<li>Bookmarks are added to the admin menu for quick access under a “Bookmarks” menu item.</li>
<li>Adds a Bookmarks view/filter to the listing pages.</li>
<li>Bookmark shortcuts are also grouped by post type within the WordPress admin bar.</li>
<li>Optional “Bookmark Title” quick edit field to customize menu labels</li>
</ul>
Filters
<ul>
<li><code>admin_bookmarks_post_types</code> – Filter to scope bookmarks to specific post types</li>
<li><code>admin_bookmarks_untitled_label</code> – Filter to customize the untitled label</li>
<li><code>admin_bookmark_feature-dashboard_widget</code> – Filter to disable the dashboard widget</li>
<li><code>admin_bookmark_feature-quick-edit</code> – Filter to disable the quick edit feature</li>
<li><code>admin_bookmark_feature-view</code> – Filter to disable the view feature</li>
<li><code>admin_bookmark_feature-admin-bar</code> – Filter to disable the admin bar feature</li>
</ul>
To disable a feature, add a small bit of custom code to your theme’s <code>functions.php</code> file:
<pre><code>add_filter( 'admin_bookmark_feature-dashboard_widget', '__return_false' );
</code></pre>

Admin Bookmarks

Bookmark your favorite posts, pages or custom post types within the WordPress admin

WPBookmark vs Admin Bookmarks