Conda Alternatives
While we have no other means of providing 'pre-built' libraries, you are not limited to only Conda. As long you meet our minimum requirements (listed below), you should be able to build your own library stack capable of MOOSE based development.
Homebrew, MacPorts, Fink are all good alternatives for MacOS machines. These tools can provide you with finished easy-to-install binaries, leaving you only needing to build PETSc, libMesh and then MOOSE/your Application.
Spack is another alternative, capable of building very optimized stacks for both Linux and MacOS. Spack however does not provide pre-built binaries. Spack instead supplies 'recipes' intended to be run by you, to build the stack.
Perhaps our Advanced Instructions on our Getting Started page would suffice?
Lastly, there is always building everything from source if you're up to the challenge!
Minimum System Requirements
In general, the following is required for MOOSE-based development:
GCC/Clang C++17 compliant compiler (GCC @ 7.5.0, Clang @ 10.0.1 or greater)
Note: Intel compilers are not supported.
Memory: 8 GBs of RAM for optimized compilation (16 GBs for debug compilation), 2 GB per core execution
Processor: 64-bit x86 or ARM64 (specifically, Apple Silicon)
Disk: 30GB
A POSIX compliant Unix-like operating system, including the two most recent versions of MacOS and most current versions of Linux.
Git version control system
Python @ 3.7 or greater