This plugin checks for all custom keys in page/post ending with _Custom_Field_Cookie, writes key as cookie name & value as cookie value.

FW Mini Feld, per Shortcode Metafields anlegen und in automatischer Metabox bearbeiten

Post Meta is a wordpress custom post field, post type and taxonomy management Plugin. Shortcode with GUI, Import & export and many more.

Select a menu in your custom field

Pure Metafields is a simple and very light weight plugin that is used to create custom metabox for wordpress any post type like page, post event your custom post can support it.