Super-fast instant uploads
ExpanDrive 4 changes the game again by moving transfers into the background – just like popular sync apps do [think: Dropbox/Google Drive]. This let’s you keep working and stop waiting for transfers to complete. ExpanDrive quickly uploads your files in the background. We’ve built a multi-threaded connection engine that makes ExpanDrive faster and much more responsive.

Cloud storage in every application
ExpanDrive acts just like a USB drive plugged into your computer. 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.

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

Requirement: OS X 10.7 or later

Home Page - http://www.expandrive.com/expandrive