If you specifically need Guitar Rig 5 for old projects, it is no longer sold as a standalone product. However, if you previously owned it, you can usually still download it through the Native Access portal. Guitar Rig 5 Player demo and review
: A free bundle from Native Instruments that includes the Guitar Rig Player alongside many other professional synths and effects.
: This is the free version of the latest Guitar Rig software. It includes a curated selection of amps, cabs, and effects that are fully functional and never expire.