Came to say the same. The vast majority of these were superseded by new products or their feature set was absorbed by other tooling. Back office was one of the worst examples. It became baked into Windows Server except Exchange.

I’m no fan of MS, but they tend to err on the side of overextending support and backwards compatibility. I would have killed Works 10 years before they did.

And some of these are just failures. I still have my MS Bob floppies, but come on.