There are three major implementations, [[Transarc]] ([[International Business Machines|IBM]]), [[OpenAFS]] and [[Arla (file system)|Arla]]. Transarc software is now deprecated and is losing support.
A fourth implementation exists in the [[Linux kernel|Linux]] [[kernel (computer science)|kernel]] [[source code]] since at least version 2.6.10.<ref>[https://archive.today/20120710092252/http://lxr.linux.no/source/Documentation/filesystems/afs.txt?v=2.6.10 Linux kernel AFS documentation for 2.6.10]</ref> Committed by [[Red Hat]], this is a fairly simple implementation still in its early stages of development and therefore incomplete as of January 2013.<ref>{{cite web|url=http://lxr.linux.no/linux/Documentation/filesystems/afs.txt|archiveurl=https://archive.today/20120801110657/http://lxr.linux.no/linux/Documentation/filesystems/afs.txt|url-status=dead|title=LXR linux/Documentation/filesystems/afs.txt|date=1 August 2012|archivedate=1 August 2012|website=linux.no|accessdate=23 April 2018}}</ref>
