Windows Home Server provides an easy to use remote access mechanism that enables a user to upload and download files to/from ones Windows Home Server when they are not on their local network.

Web Folders 4 WHS allows full browser-based drag and drop functionality for files and folders when uploading and downloading files remotely. The add-in also allows you to access your files through the Windows Explorer shell and any other WebDav client that supports HTTPS.

More info: Web Folders 4 WHS