Directorist Multi Directory Linking GPL Overview:
If you are running multi-directories on your directory website, Multi-directory Linking will be an awesome extension that will allow your users to connect to other types of directories. This opens up a new window to earn money from your directory website.
This extension is useful for a user who wants to add other listings from different directory categories or types to his or her individual listing. Your user usually wants this feature to show relevant listings on the single listing page.