Piyush Mishra

The Open Graph protocol enables any web page to become a rich object in a social graph. For instance, this is used on Facebook to enable any web page to have the same functionality as a Facebook Page.
While many different technologies and schemas exist and could be combined together, there isn’t a single technology which provides enough information to richly represent any web page within the social graph. The Open Graph protocol builds on these existing technologies and gives developers one thing to implement. Developer simplicity is a key goal of the Open Graph protocol which has informed many of the technical design decisions.
<h4>For Developers</h4>
Use <code>add_action('open_graph_head_pre','your_function');</code> and <code>add_action('open_graph_head_post','your_function');</code> to edit the meta data. For an instance of the class.
Always use <code>open_graph_instance()</code> 
Read more on the Plugin URI > <a href="http://www.piyushmishra.com/plugins/open-graph.html" title="Plugin URI" rel="nofollow ugc">Open Graph WP implementation</a> or check out the FAQs

Open Graph WP implementation

Implements the Open Graph Protocol on a WordPress installation. Can be used by other plugins as a dependency.

Vinoj Cardoza

WP Facebook Like Box is a social plugin that enables Facebook Page owners to attract and gain Likes from their own website. The Facebook Like Box WordPress Plugin enables helps users to:
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See how many users already like your Page, and which of their friends like it too
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Read recent posts from the Page
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Like the Page with one click, without needing to visit the Page.
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Add like button for the posts.
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Add a shortcode to display the facebook like box on any page or post.
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Add a shortcode to display the facebook posts like on any page or post.
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Translation enabled by using I18n.
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Note: To get Best “Facebook Like Box plugin” output use width is 292px & Height is 210px.
<h4>Support</h4>
Thanks for downloading and installing my plugin.
Support Page: https://johnn.info/
If you have any suggestions or feedback, please post it in the following link.
<h4>Translation</h4>
Translation is enabled for this plugin. If someone interested in translating this plugin please visit the following link and post in the comments section with your contact email. Thanks.
<h4>Translated languages</h4>
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Danish (Translated by Simon Bogh)
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French (Translated by Laurent Verpeet)
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German (Translated by Peter Kaulfuss)
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Hungarian (Translated by Varanka Zoltan)
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Italian (Transalted by Claudio Chesselli)
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Spanish (Translated by Oscar S. G. Saldarriaga)
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Tamil (Translated by Vinoj Cardoza)
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</ul>

Easy Social Like Box – Popup – Sidebar Widget

Reviews most welcome!

WP Facebook Like Box Plugin enables you to display the facebook page likes in sidebar widget or popup. Display like button for the posts.

Open Graph WP implementation vs Easy Social Like Box – Popup – Sidebar Widget