====== Unix Systems ======

|[[:systems:research|Research Unix]] |The versions of Unix developed at Bell Laboratories |
|[[:systems:usl_usg|USL/USG]] |Systems developed by the Unix Support Group and the Unix System Laboratories |
|[[:systems:other_early_unixes|Other Early Unixes]] |Modified versions of early Unix developed outside the Labs |
|[[:systems:early_bsds|Early BSDs]] |The 16-bit BSDs from the University of California, written for the PDP-11 |
|[[:systems:32bit_bsds|32-bit BSDs]] |The 32-bit BSDs for the VAX and other hardware architectures |
|[[:systems:commercial_unixes|Commercial Unixes]] |Commercial versions of Unix sold by AT&T and other companies |
|[[:systems:unix_derivatives|Unix Derivatives]] |Systems that are derived from Unix but no longer have any Unix source code |