Burroughs Large System (aka B5000-B8500) still (virtually) exist as Unisys Clearpath MCP. You could download a VM if you wanted to try it (I assume you still can).

BiiN and i960 are sorta the same thing to the extent that Intel took the BiiN work after that project died and commercialized it as the i960. Unfortunately, except for the early i960MC, XA & XM versions, Intel was busy stripping feature out of it to make an embedded processor instead of making use of the really cool parts. What might have been...