This is called mounting. 

What our desktop software does, is install custom drivers that connect with our database that create a new hard disk on your machine which you can mount or unmount at any time. 

The custom drivers enable the software to allow you to use it as if it were part of your operating system. Everything you do with that mounted drive is real-time updated on our servers and in all our other apps.

The best way to experience the desktop app is to Try it for yourself!