The Software on shtools.de is Freeware. This means, it is distributed free of charge.
If you like the programs and if you want to support its development, you can pay a small
amount into my Paypal Account.
The money is mainly used to pay the bills for this Server, but there are a lot of
other things which must be paid, too.
If you own a credit card (e.g. Visa, MasterCard, American Express) or a Paypal Account,
you can use the following button to make a donation: