IMSL substitutes?

[Bruno Pape]

I have a customer, not connected to the net, who has been using the IMSL
routines in software he writes.  He would now like to distribute the 
software so he needs to find some public domain "equivalent" package(s).

Does anyone have any information on public domain software distributed by
IMSL such as ICEPACK, LINPACK, or MINPACK?  Or on software distributed by
The Numeric Analysis Group, NAG, out of the UK?  Or any other posibilities.

Thanks on behalf of Klaus,

Bruno