Is it permissible to save, read, and print complete religious and scientific books available on the internet? What is the ruling on free computer and mobile programs available on the internet, and are there programs authorized for download?

There is no objection to benefiting from free books and programs available online by reading, saving, or printing them, because they were only placed on the internet for that purpose. The default is that downloading them is permissible, and the responsibility lies with the publishing website if its owner does not authorize it. The browser is not required to verify the owner's consent.