Retail Express is designed for use on Windows computers, but can still be used on Mac with some additional requirements.
(Virtual machine required for receipt printing/integrated EFTPOS)
Google Chrome or Safari
For detailed information please refer to the Hardware and Software Requirements.
To enable hardware you will need to install a virtual machine running Windows 10. Virtual Machines can be installed by using software like Vmware Fusion (hardware requirements) or Parallels (hardware requirements).