FAQ: Is Dolphin compatible with iMacs?

The software is accessed with a browser (Internet Explorer, Firefox, Safari etc.) and that does not depend on the operating system. BUT - the software itself is designed to be placed on a server operating Windows or Linux running Apache for access by the public.
If you are "geeky" enough to install and run a Windows emulation package on your Mac, you might get it to operate on your computer (Google MAMP) - but that is not a server where the public can access it.
Just understand that a Dolphin based website can be accessed using any kind of operating system.