The software is not "freeware". Legally, you need an original license, which can sometimes be found second-hand or may be included if you own older versions of HALion Sonic.
Surge is a free, open-source hybrid synthesizer. It is fully 64-bit compatible and offers a depth of sound design that makes it a staple in modern production. Telechargement Gratuit De Hypersonic 2 VST 64 Bits