Syndie is an open source computer to (re-publish) (mainly ) over a variety of anonymous and non-anonymous .

Syndie is capable of reaching archives situated in those anonymous networks: I2P, Tor, Freenet.



Syndie has been in development since 2003 and ties in closely with the I2P network project, which is considered a parent project.<br> Following the departure of Jrandom in 2007, work on syndie was paused, however as of 2013 active development has once again resumed.


Syndie operates in a manner similar to , , , and other content tools; it allows one or more authors to privately or publicly post messages. Messages are pushed and pulled to and from archive servers (other peers that choose to be), which are hosted in a variety of anonymous and non-anonymous locations.

Most archive servers are archives hosted inside the I2P network, but there are syndie archives in Freenet as well as the normal internet. Each archive does not control the content stored on it; by default all messages are pushed and pulled by all participants. In this way, every message is backed up by every user, so should one archive go down, the content can be pushed to a different archive then pulled by other users of that archive. This means that even if all of the users and archives delete a message, as long as one person has it and there is one pushable archive, the message will be redistributed to every user.

Users have the option to delete locally stored messages after a set time, after the local storage consumes a certain amount of , or by of users.

Each user can create multiple identities. Each identity is known as a forum, and users can post into their own or different forums. Each user can control their forum; for example, they may wish to run a blog by not permitting other people to start threads, but allowing them to post comments.

Technical requirements

Syndie is a and as such can run on any on which is supported; although a is required for the versions.

Syndie is primarily a application, based on the for Java, but it can be run in a () mode.

See Also on BitcoinWiki

  • , ,
  • I2P – The development of Syndie and I2P currently overlap.
  • Anonymous P2P
  • – Support P2P web forum.