Not an M7 emulation, but a desert-island reverb for almost every pro engineer. Convology XT (Free):
: Always opt for legally purchasing software. This supports developers and allows for access to updates and support. liquidsonics seventh heaven crack best
If you’d like, I can help outline or write a legitimate paper on any of those topics instead. Just let me know. Not an M7 emulation, but a desert-island reverb