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* [[Plan 9 from Bell Labs|Plan 9]]'s [[Fossil (file system)|Fossil]] file system can provide a similar feature, taking periodic snapshots (often hourly) and making them available in <tt>/n/snap</tt>. Fossil can forever archive a snapshot into [[Venti]] (usually one snapshot each day) and make them available in <tt>/n/dump</tt>. If multiple changes are made to a file during the interval between snapshots, only the most recent will be recorded in the next snapshot.
* [[Write Anywhere File Layout]] - [[NetApp]]'s storage solutions implement a file system called WAFL, which uses snapshot technology to keep different versions of all files in a volume around.
* pdumpfs, authored by Satoru Takabayashi, is a simple daily backup system similar to Plan 9's /n/dump, implemented in [[Ruby (programming language)|Ruby]]. It functions as a snapshotting tool, which makes it possible to copy a whole directory to another ___location by using hardlinks. Used regularly, this can produce an effect similar to versioning.<ref>[https://archive.is/20120701101406/http://0xcc.net/pdumpfs/index.html.en pDumpFS Homepage]
*Microsoft Windows
** [[Shadow Copy]] - is a feature introduced by Microsoft with Windows Server 2003, 2008, 2012 as well as Windows 7, 8, and 10. [[Shadow Copy]] allows for taking manual or automatic backup copies or snapshots of a file or folder on a specific volume at a specific point in time.
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