There are plenty of commercial fractal antennas available. Which one? Depends
on the app.

Which gets back to the original question. WHO? Your site seems to be the only
one, and all seems to be "proprietary" (by your own admission). So, "limited
proprietary designs" would be a better term to use than "commercially
available," which implies a broad (i.e. commercial) market. Silly to claim
"commercial" when no one is offering them except in proprietary designs. 'Nuff
said.

A