I have not tried using any software for my stamps. But I have read some about the software that can be used on some threads in here.
I've found Dropbox to be much handier than flash drives for this. There are several other no cost cloud solutions that would work as well from Microsoft, Google, and Amazon. Plus it has the advantage that if I ever suffered a fire, I would have an up to date inventory off-site.
True enough... I use Dropbox at work for engineering drawings between our China and Mexico sites. Didn't think about the stamp collections and off-site storage... good idea! Guess I just like the portability of flash drives and the 'feel' that I have control...