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The BSDs are the obvious 'copycenter' alternatives to GNU/Linux, not sure if they have any traction in IOT though.


I am thinking that it is somehow ironic that parent managed to not list a single linux competitor... The alternatives he mentioned are not posix compilant. Instead they are extremely lightweight MCU OSes which serve a completely different role.


They are competitor in the sense of free beer OS that does the job.

Being POSIX compatible is hardly something that most IoT vendors care about.




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