on the history of Linux.
"Linux is what Windows had once promised to be - at least in terms of cross-platform support. In the wake of the PowerPC alliance from IBM, Apple, and Motorola in 1991, Microsoft made a commitment to support Windows NT 3.51 on PowerPC chips. Windows eventually added support for Digital's Alpha NEC's and SGI's MIPS chips. Workstation maker Intergraph ported Windows NT 3.51 to its Clipper chips and said it was creating a port to Sparc chips from Sun. Neither ports saw the light of day.
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