Definition of Shareware

Shareware distribution gives users a chance to try software before
buying it.  If you try a Shareware program and continue using it, you
are expected to register (i.e. purchase it).  Individual programs differ
on details, some request registration while others require it, some
specify a maximum trial period.  With registration, you get anything
from the simple right to continue using the software to an updated
program with printed manual.

Copyright laws apply to both Shareware and commercial software, and the
copyright holder retains all rights, with a few specific exceptions as
stated below. Shareware authors are accomplished programmers, just like
commercial authors, and the programs are of comparable quality.  (In
both cases, there are good programs and bad ones!).  The main difference
is in the method of distribution.The author specifically grants the right
to copy and distribute the software, either to all and sundry or to a
specific group.  For example, some authors require written permission
before a commercial disk vendor may copy their Shareware.

Shareware is a distribution method, not a type of software.  You should
find software that suits your needs and pocketbook, whether it's
commercial or Shareware.  The Shareware system makes fitting your needs
easier, because you can try before you buy.  And because the overhead is
low, prices are low also.

The author places a trust on you, and expects you to be honest and pay
if you are going to use it after the evaluation period.

Shareware has the ultimate money-back guarantee, if you don't use the
product, you don't pay for it.