And Airnef will automatically skip over files you've already downloaded! For cameras without realtime WiFi shooting support an optional staged-realtime process can be used as well. You can optionally use the command-line version directly to script your transfers.
The GUI front-end allows you to visually select the criteria of which images to download and then launches the command-line app to perform the transfer. Airnef is two applications - a GUI front-end and a command-line app.