Nagware

from Jargon File (4.4.4, 14 Aug 2003)

nagware
 /nag'weir/, n.

   [Usenet] The variety of {shareware} that displays a large screen at
   the beginning or end reminding you to register, typically requiring
   some sort of keystroke to continue so that you can't use the software
   in batch mode. Compare {annoyware}, {crippleware}.

from The Free On-line Dictionary of Computing (8 July 2008)

nagware

   /nag'weir/ [{Usenet}] The variety of {shareware} that displays
   a large screen at the beginning or end reminding you to
   register, typically requiring some sort of keystroke to
   continue so that you can't use the software in batch mode.
   Compare {crippleware}.

   [{Jargon File}]

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