OS-tan lineage

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There are many computer and OS lineages, many of which are intertwined to some degree. So although these system families don't seem to be related, many of them share a common ancestor, either directly (code-derived) or indirectly through influences from a common system.

In most cases, the founder of a lineage is created from another one herself, but establishes herself and her descendants as a new seperate lineage due to cultural and/or ideological differences.

List of lineages, to be better organized (somehow!) later:

• CP/M
  • x86 DOS
• DOS/Win9x
• pre-Macintosh/Early Apple
  • Classic Mac
• Commodore
• Sinclair
• Atari
• MIT
• DEC
  • PDP-8 branch
  • PDP-11 branch
  • RSX branch (derived from RW-300)
    • WinNT (NT based off VMS)
• Research Unix
  • Plan 9
  • Sys V
  • BSD
    • NeXTSTEP/Mac OSX
  • SYS V+BSD hybrid
• Linux
  • Debian branch
    • Ubuntu branch
  • Red Hat branch
  • Slackware branch
  • Other branches
• IBM
  • System/360
  • GMOS line
• IAS
• CDC

• Independent (no predecessor, made from scratch)