Most Mac OS X users should be able to simply download the relevant executables and run these without any need for compilation, but if you use linux or wish to develop the code, you will need the full distribution kit.
The kit has been test on the following systems : Red Hat V3.4.6 Debian V2.6.18 CentOS Vsomething Latest version : 30 June 2011
Intel Mac OS X Lion executables are here : OSX_Lion_binaries
Linux 32-bit executables can be found here : Linux_32_binaries
Linux 64-bit executables can be found here : Linux_64_binaries
The distribution kit can be found here : Distribution_kit
In order to build yourself you will need to install XCODE which can be downloaded from http://developer.apple.com/technology/xcode.html,
and gfortran which can be found here http://www.macresearch.org/gfortran-leopard. You will also find a gfortran dmg file in the distribution.
Follow the instructions that come with these installation packages.
To be able to download these packages, you will have to register as an Apple Developer.
Then type "make_all.csh" in the downloaded USF directory.
Update October 2017 :
Joachim Reichelt has kindly pointed out that the latest fortran
library that works on OS X can be found here : https://gcc.gnu.org/wiki/GFortranBinaries
Install, and then execute the command : $ export DYLD_LIBRARY_PATH=/usr/local/gfortran/lib/i386/
aconio ave cello coma comap comdem crave dataman essens findncs imp lsqman mama mapfix mapman mappage maskit mave moleman moleman2 ncs6d o2d odbman oops oops2 prof seaman site2rt sod solex spancsi ssencs voidoo xpand xplo2d Programs in the Uppsala Software Factory were written by Gerard Kleywegt.