Normaliz started in 1998 as a C program written by Winfried Bruns and Robert Koch.

It wa transferred in 2007/08 to C++ and extended by Bogdan Ichim.

The principal authors since 2009 are Winfried Bruns and Christof Söger (until 2016).

Further contribtors:

Sebastian Gutsche (PyNormaliz and Docjer script, adeditions to libnormaliz)
Geas Kämpf (Macaulay2 package)
Matthias köppe (autools and instrallation scripts)
Tim Römer (web presentation)
Richard Sieg (additions to libnormaliz and PyNormaliz)

Packages outside the distribution contributed by

John Abbott, Anna Bigatti and Christof Söger (CoCoA)
Sebastian Gutsche, Max Horn and Christof Söger (GAP)

SageMtah integration by 

Matthias köppe and Jean-Philippe Labbé