This is the software publisher's description.

ExpanDrive acts just like a USB drive plugged into your Mac. Open, edit, and save files to remote computers from within your favorite programs—even when they are on a server half a world away. ExpanDrive enhances every single application on your computer by transparently connecting it to remote data.

With ExpanDrive, you can securely access any remote file server directly from Finder, or even the terminal. No need to open a separate transfer client just for file transfer. ExpanDrive extends the way all applications on your Mac can access data.

Once you’re connected, you stay connected. If you change access points or bring your computer out of sleep, you’ll stay connected. Our robust networking core ensures that if a connection is available, your drive is available.

Our client is dead simple—there is nothing to install or configure on the server. No complicated instructions. No administrative hassles. Just use your existing login credentials to securely access your remote files.