Found the evaluation version on versiontracker:
webMASTER Pro - 2.0
#1 HTML Editor and web site manager. FTP client included
The readme file in it said this:
Registration:
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If you wish to register webMASTER Pro(TM), full
details and ordering options are available within
the program. See the REGISTER menu. You may use
this shareware version 20 times to evaluate it.