Suggestion for extranet website/template


Any suggestions for a good WP extranet template with an integrated drag/drop builder like Fusion Builder? I want to add an extranet to my website. I work as a property/condominium manager and I often need to share douments. However, most documents are confidential and I need a way to share them so every condominium residents has their own access to their own documents.

Also, my goal is not to add an extranet plugin. I want the extranet to be apart from the website but linked to it via a tab on my website’s menu.

Also, if possible, I’d prefer a template offering a good mobile device optimization.