If you're looking for alternative reverb plugins, here are some top options:
While LiquidSonics' Seventh Heaven is not a permanently free plugin, you can access its full capabilities on a Mac through a 14-day free trial provided directly by the developer. This trial requires an iLok account seventh heaven reverb free download mac best
The standard Seventh Heaven and Seventh Heaven Professional plugins are premium, paid software. They are not permanently free. If you're looking for alternative reverb plugins, here