From a December 1999 Readme:
Buck's Serial Number Generator (BSNG) has become an industry standard
of pirates everywhere since its release just one short year ago.

BSNG enables you to create unlimited number of serial numbers, allows
you to save your list in ASCII text and/or copies it to the clipboard.

Krackers, Coders and other such analytical minds can write their own
plugins to add to the amount of apps you can generate serial numbers
for.

* * *

Download #1: BSNG 3.1a2
Download #2: BSNG 2.6
Download #3: BSNG SDK 2.6 for developing your own plugins with
[Codewarrior][1].
Download #4: A plugin for generating codes for use with the [Aladdin
Transaction Engine][2].
Download #5: A plugin for generating codes for use with different
versions of [eXodus][3].

Please note that NO ADDITIONAL PLUGINS ARE INCLUDED IN THESE RELEASES!
This application has been uploaded to Macintosh Garden only because
there are a few releases already on the Garden that require BSNG
plugins for registration. ?[siddhartha][4]

Compatibility
Architecture: 68k PPC

  [1]: http://macintoshgarden.org/apps/codewarrior-6
  [2]: http://macintoshgarden.org/forum/aladdin-transaction-engine
  [3]: http://macintoshgarden.org/search/node/exodus
  [4]: http://macintoshgarden.org/users/siddhartha77