> what is the relations between lwIP , uIP?
> their are started by Adam Dunkels, what difference in them? only lisence ?
The major difference is that lwIP is targeted at systems without much memory, but normally with a 32 bit CPU. uIP is even smaller, and targeted at very simple 8 and 16 bit microcontroller systems. They have the same licence as far as I remember. uIP continues to be developed by Adam at SICS, whereas lwIP is developed by a team of independent engineers as an open-source project.