[eropple]

Not only was there IE for Mac -- at the time, it was actually a pretty decent browser. Bit rotted over time, but there was a stretch when your choices were a really janky Netscape and IE for Mac, and the choice as I recall it was pretty easy.

[pseudosavant]

Not only was it pretty decent, it was far more standards compliant than the Windows IE. I don't think they actually shared much code wise. At least developing for IE on Mac felt like adding another browser to test.