WordPress.org

Authors: athenaofdelphi, scottwallick

The Advanced Custom Field Widget is an extension of the Custom Field Widget by Scott Wallick, and displays values of custom field keys, allowing post- and page-specific meta sidebar content.

For detailed information about this plugin and how it works, check out it's wiki page at Athena's Wiki.

For more information about Scott's orginal Custom Field Widget, check out plaintxt.org.