GNU
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GNU is an extensive collection of free software, which can be used as an operating system or can be used in parts with other operating systems. Most of GNU is licensed under the GNU Project's own Gene
Richard Stallman, founder of the GNU project
Oracle Solaris
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Oracle Solaris is a proprietary Unix operating system offered by Oracle for SPARC and x86-64 based workstations and servers. Originally developed by Sun Microsystems as Solaris, it superseded the comp
olvwm with OpenWindows on Solaris