@steve Thanks so much for this blast from my past! I tripped across it while I was writing a memoir of my journey in digital media.
It was, indeed, a remarkable team that we assembled at 25 First Street in Cambridge (which later became HubSpot's headquarters), and the team, led by Ed Belove, Mike Kraley, Dave Rollert, and others broke a lot of new ground before we got overrun by the Mosaic/WWW tsunami. Still, the effort led to ZDNet.
Here, to complete a bit more of the picture, is a piece I penned 12 years ago for the 20th anniversary of ZDNet: https://www.zdnet.com/article/ziffnet-project-athena-and-the-moment-of-conception/.