Matthias Pfefferle

Will Norris

The <a href="https://ogp.me/" rel="nofollow ugc">Open Graph protocol</a> enables any web page to become a rich object in a social graph. Most notably, this allows for these pages to be used with Facebook’s <a href="https://developers.facebook.com/docs/reference/plugins/like" rel="nofollow ugc">Like Button</a> and <a href="https://developers.facebook.com/docs/reference/api/" rel="nofollow ugc">Graph API</a> as well as within Twitter posts.
The Open Graph plugin inserts the Open Graph metadata into WordPress posts and pages, and provides a simple extension mechanism for other plugins and themes to override this data, or to provide additional Open Graph data.
This plugin does not directly add social plugins like the Facebook Like Button to your pages (though they’re pretty simple to add). It will however make your pages look great when shared using those kinds of tools.

Open Graph

Adds Open Graph metadata to your posts and pages so that they look great when shared on sites like Facebook and Twitter.

David Miller

This is a plugin to add <a href="http://opengraphprotocol.org/" rel="nofollow ugc">Open Graph Protocol</a> data to the metadata of your WordPress blog for better communication with Facebook and other services which use this type of data.
If you have any queries regarding this plugin, please visit <a href="http://www.millerswebsite.co.uk/2011/01/23/wordpress-plugin-wp-ogp" rel="nofollow ugc">http://www.millerswebsite.co.uk</a>

WP-OGP

This is a plugin to add Open Graph Protocol Data to the metadata of your WordPress blog.

Open Graph vs WP-OGP