What is it? It's TCP/IP software published and and sold by AmigaKit, and bundled with a number of network cards, for example:
http://amigakit.leamancomputing.com/catalog/advanced_search_result.php?keywords=easynetIf you do a forum search on it here you'll find it mentioned in 100's of threads.
IMHO I'd call it "HardNet" based on the number of folks I've seen posting about issues with it, but I'm just a grumpy old man, it does seem like it works well for a lot of people. Also it is still being actively developed (the only other stack that can boast the same is Roadshow).
