interesting. I took a look at the site:
www.pendrivelinux.com
and I took a look at the app section. Strangely alot of the apps were for windows like the anti-virus section. It says portable but there are no packages written for pendrivelinux distro. I am assuming that because it is such a big distro it, they treat the packages as normal packages considering you will need a bigger usb stick. Regardless, it has a lot of great tutorials. I will give it a shot.