Shareware is NOT free. It usually has a free numbers of uses / time period before which it MUST be paid for or removed.
If you wanted to put it on a CD then check the EULA of each program. Some say you can freely distribute un-altered copies, however some might not allow that and ask you give the website URL instead.
It would appear the "norm" is to contact the author for permission. I've been approached by 2 or 3 magazines (none from the UK though) and have given permission for my software to be distributed on cover disks.
It might be best to contact the author just out of politeness.
Also some EULA allow you to charge for materials (CDs) and P&P but not the contents.
Regardless of the license, it would probably be polite to e-mail the developers and ask for their approval. Those who use the GNU public license will almost certainly not have any issues with it. Others may want you to add a link to their website. The problem may crop up with the Free for home use versions of commercial stuff like avast!, Sygate & AVG. Best of luck it looks like a good idea.
I agree with Belatucadrus, and wish you the best of luck with your venture. I've seen the hard work and extent of your help section, also your own site where you have placed many graphics as well as text in an attempt to help others.
Well done Chris. J.
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