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I2P logo.svg
Developer(s)I2P Team[1]
Initial release{{#property:P571|from=Q565283}}; Error: first parameter cannot be parsed as a date or time. ({{#property:P571|from=Q565283}})
Stable release27 January 2016; 5 years ago (2016-01-27)[2] / July 31, 2015 (2015-07-31)
Written in{{#property:P277|from=Q565283}}
Operating systemCross-platform, including: {{#property:P306|from=Q565283}}
TypeOverlay network
LicenseMany: {{#property:P275|from=Q565283}}

I2P (means Invisible Internet Project,[3] though it is not commonly referred to by this name anymore) is a mixed-license free and open source project building an anonymous network (or, more accurately, a pseudonymous overlay network).

The network is a simple layer that applications can use to anonymously and securely send messages to each other. Possible uses include anonymous surfing, chatting, blogging and file transfers.


  1. "I2P Project Members". Retrieved 2015-11-22. 
  2. zzz (27 January 2016). "0.9.24 Release". 
  3. IRC Meeting #59: <jrand0m> i2p = i^2p (invisible internet project)