We wish to thank current active contributors to PSPP:

* Ben Pfaff wrote the initial program and manual, which comprises the
majority of the current code.  Ben is the current maintainer and
continues to contribute. 

* John Darrington wrote the graphical user interface, and the T-TEST,
ONEWAY, EXAMINE, RANK and  NPAR TESTS commands, implemented support
for long variable names and made numerous revisions to other  modules.  

* Jason Stover contributed statistical and numerical functionality,
including lib/gslextras. Jason is also an important contributor to
GSL, used by PSPP. 

We also thank past contributors:

* John Williams wrote an initial draft of the T-TEST procedure.

* Michael Kiefte contributed bug fixes and other enhancements.

* Patrick Kobly contributed bug fixes and other enhancements.