Thanks. Yes, I was pretty proud of what we built. We had two orders of magnitude price-performance advantage over the state of the art for about a year, but before we could get any significant market share, gigabit ethernet came along (and the price of fast ethernet dropped) and that wiped us out. But it was fun while it lasted.
The hardware kind of exists. I have two prototype boards in my closet but they haven't been powered on in 30 years. I also don't know where the code for the device drivers is any more, though I have a box full of old hard drives that probably has it somewhere. Maybe some digital archeologist will dig it up some day.
To give proper credit where it is due, the idea and hardware design for Flownet were the work of Mike Ciholas, who went on to found a very successful hardware design company [1]. I wrote the device drivers and did the marketing, which is probably one of the reasons we failed. Turns out I'm terrible at marketing.