It is developed for a UNIX/LINUX platform, so, for Windows users the best choice is to create a VMWare virtual machine and install SeaDAS, or to use an existing linux machine and install it.
It has a GUI and a command line interface. To process a large set of files, the best choice is to use the command line(or terminal/SSH) and use Bash or Seadas/IDL scripts.
SeaDAS command line input in a terminal/SSH:
>Seadas -em -b input.cmd
input.cmd is text file with SeaDAS(IDL) commands, for example: