PKWare, PKZIP, PKUNZIP, these are all names which mean something significant to me. For most of the 90s, the PK tools were probably the most frequently used in my toolbox. Compressing Doom from my mate's PC across several floppy disks, creating my own VB installers, downloading data from bulletin boards or the early internet. It was an essential compression/decompression tool. But, the story of its origins is a little more tarnished than perhaps you would expect. If you've hard of SEA and their ARC file format, you might already know. Let's dive in.