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Operating System Design/Case Studies/BeOS
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BeOS Haiku (operating system)
BeOS is an operating system for personal computers. It was under development from 1991 until development was discontinued in 1997. Although it has partial compatibility with POSIX and a Bash shell, it is not based on Unix sources and remains closed-source.
The open-source Haiku operating system aims to pick up where BeOS left off. It began development in 2001 and became self-hosting and 2008.