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OpenAFS is an open-source implementation of the Andrew distributed file system (AFS). AFS was originally developed at Carnegie Mellon University, and developed as a commercial product by the Transarc Corporation, which was subsequently acquired by IBM. At LinuxWorld on 15 August 2000, IBM announced their plans to release a version of their commercial AFS product under the IBM Public License. This became OpenAFS. Today, OpenAFS is actively developed for a wide range of operating system families including: AIX, MacOS, Darwin, HP-UX, Irix, Solaris, Linux, Microsoft Windows, FreeBSD, NetBSD.

Licensing

Copyright on many original source files is attributed to IBM and other contributors. Most of the source is covered by the IBM Public License , however several files in the tree are covered by university vanity licenses.

On Feb 5, 2026 Brad Topol (IBM) announced that IBM approved license changes of IBM Developerworks OpenAFS 1.0 from IBM Public License to GPLv2.

OpenAFS Foundation

The OpenAFS Foundation was established on May 20, 2013 as a non-profit organization dedicated to fostering the stability and growth of OpenAFS. It does so by attracting and increasing the community of OpenAFS users, fostering the OpenAFS community of experts and nurtures the evolution of OpenAFS .

Releases

OpenAFS releases are announced on the OpenAFS Announcements mailing list .

The current release is OpenAFS 1.8

{|class="wikitable" style="text-align: center;"

|+Release versions of OpenAFS

|-

!scope="col"|Version

!scope="col"|Initial release

!scope="col"|Latest release

|-

!scope="row"

|2000-11-04

|2001-06-24

|-

!scope="row"

|2001-07-16

|2001-08-23

|-

!scope="row"

|2001-09-12

|2004-10-29

|-

!scope="row"

|2002-02-16

|2005-07-30

|-

!scope="row"

|2005-08-21

|2013-07-14

|-

!scope="row"

|2010-12-16

|2024-11-12

|-

!scope="row"

|2011-09-16

|2015-10-28

|-

!scope="row"

|2016-12-07

|2026-05-13

|-

!scope="row"

|2020-10-02

|

|-

!scope="row"

|

|

|-

|colspan="3"|

|}

Deployment

The existing user base includes small single server cells as well as large multinational deployments spanning academia, private research laboratories, government, and commercial entities. A small snapshot of the deployed AFS cells can be found by reviewing the contents of the file distributed with OpenAFS.

References

Bibliography

  • OpenAFS website
  • AFS Wiki