This is a tool we should all have in our arsenal: Portable Apps, the ability to take any open source program and use it anywhere the mood strikes us. Just because using any program wasn’t enough, using that same program in any operating system is even more important. For the final tweak, you should be able to use it from any local launch platform; the two most important being a Memory Stick and a LiveCD. This system does all of that, built in. Then it gives you a simple programing environment to add your own additional software, modify the basic environment (wallpaper, sounds, security protection, etc.), and otherwise make it your own. It comes pre-bundled with some very powerful software, like FileZilla, The Gimp, and NVU Portable. Then it gives you some more build-your-own tools, like Virtual Dub and WinMerge. My favorite bit, is it is dirt simple to add your own open-source programs to the arsenal; see the Development Guide for specifics.