From the OpenUP docs:
"OpenUP/Basic is an iterative software development process that is minimal, complete and extensible."
And from the Process Framework website:
The Eclipse Process Framework (EPF) aims at producing a customizable software proess engineering framework.hhm - what a goal...
Although the authors claim that Windows-32 is required, it works fine on Mac OS-X, at least with Firefox - Safari fails to display anything :-(