UPDATE TO THIS ARTICLE CAN BE FOUND HERE - Freeware Engineers Toolkit
This is a list of software that I carry on my portable thumbdrive (1Gb). Almost all of it is Freeware (any exceptions are noted) and most of it is Open Source too.
The flashkey has an autorun.inf to start PStart on double click, or on the right click menu either open explorer or mount a Truecrypt archive (to protect customer data). Lastly the key is bootable with Acronis True Image V9