Page and Post Clone plugin creates a clone of a page or post with the same content as the original.
FastDup - Fastest WordPress Migration & Duplicator
This Plugin is use for create duplicate page.
This plugin creates a duplicate copy of you selected theme.
Clones an existing site into a new one in a multisite installation : copies all posts, settings and files
WPC Variation Duplicator helps you duplicate a variation with all properties in just 1-click.