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Legal stuff

The I2P router (router.jar) and SDK (i2p.jar) are almost entirely public domain, with a few notable exceptions:

• ElGamal and DSA code, under the BSD license, written by TheCrypto
• SHA256 and HMAC-SHA256, under the MIT license, written by the Legion of the Bouncycastle
• AES code, under the Cryptix (MIT) license, written by the Cryptix team
• SNTP code, under the BSD license, written by Adam Buckley
• The rest is outright public domain, written by jrandom, mihi, hypercubus, oOo, ugha, duck, shendaras, and others.

On top of the I2P router are a series of client applications, each with their own set of licenses and dependencies. This webpage is being served as part of the I2P routerconsole client application, which is built off a trimmed down Jetty instance (trimmed down, as in, we do not include the demo apps or other add-ons, and we simplify configuration), allowing you to deploy standard JSP/Servlet web applications into your router. Jetty in turn makes use of Apache's javax.servlet (javax.servlet.jar) implementation, as well as their xerces-j XML parser (xerces.jar). Their XML parser requires the Sun XML APIs (JAXP) which is included in binary form (xml-apis.jar) as required by their binary code license. This product includes software developed by the Apache Software Foundation (http://www.apache.org/).

Another application you can see on this webpage is I2PTunnel (your web interface) - a GPL'ed application written by mihi that lets you tunnel normal TCP/IP traffic over I2P (such as the eepproxy and the irc proxy). There is also a susimail web based mail client available on the console, which is a GPL'ed application written by susi23. The addressbook application, written by Ragnarok helps maintain your hosts.txt files (see ./addressbook/ for more information).

The router by default also includes human's public domain SAM bridge, which other client applications (such the bittorrent port) can use. There is also an optimized library for doing large number calculations - jbigi - which in turn uses the LGPL licensed GMP library, tuned for various PC architectures. Launchers for windows users are built with Launch4J, and the installer is built with IzPack. For details on other applications available, as well as their licenses, please see the license policy. Source for the I2P code and most bundled client applications can be found on our download page. .

Release history

A more complete list of changes can be found in the history.txt file in your i2p directory.