coxorange: Yes, it passes the ACiD2 test.

Dies: iCab uses like Safari the WebKit engine, but it works different like Safari.

Here's a comparison chart about MacOS X Browsers: Deutsch English (Google translated)

iCab has very much features, so it's maybe a bit more difficult to configure. It there are problems, ask me, I'm also in contact with the developer.
It's also possible to process it with the XSlimmer, so you get a browser with only 7,7 MB size! I'm not sure but it seems it's a bit faster after slimming. iCab doesn't need to be AMD patched with zephyroth's patcher, no cpuid's detected. Firefox, Flock, SeaMonkey and other browsers have some cpuids which must be fixed.