Define "better". The very few times in my life that networking performance mattered, I found Linux (2.2+) to be hard to beat as a general purpose stack. If you

Define "better". The very few times in my life that networking performance mattered, I found Linux (2.2+) to be hard to beat as a general purpose stack. If you need something specific with better performance than that, you should probably look at moving more of the network stack to your application layer.