Then AT&T decided to started making money off it and everything went downhill.
I looked at some code in OpenSlowlaris and I assume that some of the AT&T code is still in there. I see nice, clean UN*X code in there yet it does not surpass the quality and the elegance of the Linux code.
Lately most commercial UN*Xes have bitten the dust. Slowlaris is the last one of them. Good riddance!