Enclaver is released on GitHub: https://github.com/edgebitio/enclaver/releases
Binary releases exist for Linux and MacOS platforms, and x86 and Arm architectures.
enclaver build and other commands can be executed on any platform and architecture.
enclaver run only supports Linux/x86 based enclaves at this time, but Linux/Arm support is very close, tracked by issue #97
Head over to the Getting Started guide to start using Enclaver.