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Original author(s)Joey Hess
Initial release19 October 2010; 11 years ago (2010-10-19)
Stable release
8.20200810 / 10 August 2020; 17 months ago (2020-08-10)
Written inHaskell
Operating systemLinux, FreeBSD, Android, OS X, Windows
Size44.2 MB
TypeFile synchronization
LicenseGPL3+, AGPL3+ [1]

git-annex is a distributed file synchronization system written in Haskell. It aims to solve the problem of sharing and synchronizing collections of large files independent from a commercial service or even a central server.


The development of git-annex began in 2010.[2] In 2012-13 the development was funded through a Kickstarter campaign.[3] The main development of this campaign was the git-annex assistant, a component that runs in the background to automate the synchronization of repositories.

The next crowd funding campaign for 2013-14 was organized over a self hosted platform.[4]


git-annex uses git to index files but does not store them in the git history. Instead a symbolic link representing and linking to the probably large file is committed. git-annex manages a content-addressable storage for the files under its control. A separate git branch logs the location of every file. Thus users can clone a git-annex repository and then decide for every file whether to make it locally available.


git-annex packages are available for a variety of operating systems, including:[5]

See also[edit]

Git-annex home page


  1. ^ "license". 18 January 2014. Retrieved 1 May 2015.
  2. ^ "git-annex roadmap".
  3. ^ "git-annex kickstarter campaign 2012".
  4. ^ "git-annex campaign".
  5. ^ "install options".
  6. ^ "Debian".
  7. ^ "Ubuntu".
  8. ^ "Fedora".
  9. ^ "FreeBSD".
  10. ^ "ArchLinux". Retrieved 2015-12-06.
  11. ^ "NixOS". Retrieved 2019-09-11.
  12. ^ "Guix". Retrieved 2019-09-11.
  13. ^ "GentooLinux". Retrieved 2019-09-11.
  14. ^ " | The OpenBSD package collection". Retrieved 2021-12-03.
  15. ^ "Android". Retrieved 2021-12-03.
  16. ^ "git-annex". Homebrew Formulae. Retrieved 2021-12-03.