The Temple Operating System

TempleOS File Downloads (100% Public Domain)

TempleOS is a free, public domain, open source, x86_64, non-preemptive multi-tasking, multi-cored, ring-0-only, 
single-address-map (identity-mapped), non-networked, PC operating system.  Paging is, basically, not used.

The CIA obsfucates to foil India, China, Russia and Korea.  They make things more complicated than necessary.  TempleOS is 
more simple than necessary. It is obnoxiously simple.  If you look at this "Hello World" joke, you can see why Terry capped 
the line count of TempleOS at 100,000.

God said TempleOS must be perfect, so backward compatibility is not promised.

Terry Davis wrote all 80,849 lines of TempleOS over a span of 15.0 years, including the 64-bit compiler.  He was a 
professional operating system developer since 1990 when he worked on Ticketmaster's VAX OS.