If you are looking for Kontakt 5.6.6 specifically, it is often because that particular version is famous among music producers for being the last version to include the "Add Library"
Kontakt 7 Player: This is free and runs many high-quality "Powered by Kontakt" libraries. Kontakt 5.6.6 Mac Torrent
Ethically, piracy affects multiple stakeholders: If you are looking for Kontakt 5
Some of the key features of Kontakt 5.6.6 include: Kontakt 5.6.6 Mac Torrent