The Jargon File (version 4.4.7, 29 Dec 2003):

payware
 /pay'weir/, n.

    Commercial software. Oppose shareware or freeware.


The Free On-line Dictionary of Computing (30 December 2018):

payware

   /pay'weir/  Commercial software.  Opposite: shareware
   or freeware.

   [Jargon File]