You forgot to mention Windows 3.11, Windows Vista, and Microsoft BOB (Google/Wikipedia it).
Didn't forget... 3.11 was part of my Windows for Workgroups and I still have a tiny 3.11 labeled screwdriver that came in the boxed package to help connect two computers via the "two-headed" lap link style serial connectors to actually create the "workgroup". As far as Vista and BOB, I didn't use them or have experience with them.
nothing is for free. My guess would be plugins as well or any new browser they upgrade as in Edge 2.0 etc.
