PLEASE HELP!!! How can I get this function?

Hi all,

May I know is there any plugin or themes in Envato has this feature? Thank you guys.

I owned a directory listing site. In my site, there are thousands of items posted by different individual clients/account.

What I needed here is, my client has their own website. They wish to duplicated the items of their account posted in my directory listing site.

So each time they uploaded new items on my directory site, their own website will sync and updated with the new items as well.