First this is a windows only package, but nevertheless sweet. In our article
What can PostgreSQL learn from MySQL?
we complained about the fact that there is nothing like Server2GO pre-packaged with PostgreSQL. Low and behold comes this thing
called Portable GIS 1.2 which can be downloaded from http://www.archaeogeek.com/blog/portable-gis/.
This is similar in architecture to Portable Apps. Its a suite of applications you can run from your USB drive without having to
reboot your windows computer.
I'm not sure if a similar thing exists for Linux, but would be nice to
know if it does. Note: all the packages this portable tool set comes with work on Linux and most started life on Linux, so it seems to me it should
not be too hard to make a Linux port of this if it doesn't already exist. Also most of these tools work on Mac OSX as well so a similar package can be made for Mac OSX.