Shareware - is software that is meant to be used on a trial basis. If you decide to keep using it, then you should register (pay for) it. My own site is devoted to freeware. No payment is required for using this software. Visit Only freeware.
I've listed some important links for those who would like to try the shareware concept.
This was not meant to be a complete listing. It is just to give a few suggestions for those who want a little more choices than freeware may offer.