JTK – Notes and Ramblings Things we have found …

Portable Firefox 1.0.4 (USB Drive-Friendly) :: Mozilla Stuff :: JohnHaller.com
Portable Firefox is a fully functional package of Firefox optimized for use on a USB key drive. It has some specially-selected optimizations to make it perform faster and extend the life of your USB key as well as a specialized launcher that will allow most of your favorite extensions to work as you switch computers.

Portable Thunderbird with Enigmail / GPG
Portable Thunderbird with Enigmail/GPG is a modified version of John Haller’s Portable Thunderbird that includes the Enigmail extension giving Thunderbird OpenPGP functionality and an interface to GnuPG.