It is now. Blurry has bounced back and forth a bit between Sourceforge and Berlios, but you can get the source here:
http://developer.berlios.de/project/showfiles.php?group_id=6879
The protocol he defines is pretty cool. I think he called it SOS - Serial Operating System. You can specify a hunk of data to transfer to a point in memory, specify a starting address, and transfer control. Very cool.