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Logo of Tahoe-LAFS
Initial release May 2, 2007[1]
Stable release 1.10.2[2] / 31 July 2015; 6 months ago (2015-07-31)
Development status Active
Written in Python
Operating system Cross-platform
Available in English
Type Cloud computing
License GNU GPL 2+ and other[3]
Website tahoe-lafs.org

Tahoe-LAFS (Tahoe Least-Authority File Store [4]) is a free and open, secure, decentralized, fault-tolerant, distributed data store and distributed file system.[5][6] It can be used as an online backup system, or to serve as a file or web host similar to Freenet,[7] depending on the front-end used to insert and access files in the Tahoe system. Tahoe can also be used in a RAID-like manner to use multiple disks to make a single large RAIN[8] pool of reliable data storage.

The system is designed and implemented around the "principle of least authority" (POLA). Strict adherence to this convention is enabled by the use of cryptographic capabilities which grant the minimal set of privileges necessary to accomplish a given task to requesting agents. A RAIN array acts as storage — these servers do not need to be trusted for confidentiality or integrity of the stored data.

Zooko Wilcox-O'Hearn is one of the developers.[9][10]


A patched Tahoe-LAFS exist (since 2011) made to run on the anonymous network I2P, with support for multiple introducers. There is also a build for Windows.[11] It must be downloaded from inside of the I2P network.[12] When I2P and Tahoe-LAFS are used together, the location of nodes is not known. This allows for anonymous distributed grids to be formed. In normal operation, the IP address of all the nodes is known to the introducers and any clients on the grid.

See also[edit]


  1. ^ "Tahoe-LAFS Documentation". tahoe-lafs.org. Retrieved 2013-05-01. 
  2. ^ Warner, Brian (2015-07-31). "ANN: Tahoe-LAFS 1.10.2 released". tahoe-dev (Mailing list). Retrieved 2015-09-15. 
  3. ^ https://tahoe-lafs.org/trac/tahoe-lafs/browser/git/docs/about.rst
  4. ^ "Tahoe-LAFS wiki". tahoe-lafs.org. Retrieved 2014-12-01. 
  5. ^ Ars Technica
  6. ^ Monteiro, Julian Geraldes (16 November 2010). "Modeling and Analysis of Reliable Peer-to-Peer Storage Systems" (PDF). Sophia Antipolis: Université de Nice. p. 17. Retrieved 15 December 2012. 
  7. ^ Zooko's blog, hosted on Tahoe
  8. ^ Redundant array of independent nodes
  9. ^ Wilcox-O'Hearn, Zooko, ANNOUNCING allmydata.org "Tahoe", the Least-Authority Filesystem, v1.3, retrieved 20 April 2009
  10. ^ "Why Whack-a-Tard won't save music". The Register. April 22, 2009. 
  11. ^ Foolscap & Tahoe-LAFS patched for use on I2P (with support for multiple introducers). 2013.
  12. ^ http://killyourtv.i2p.rocks/tahoe-lafs/ URL to inside I2P


External links[edit]