WikiLeaks. WikiLeaks. I2P. The software is free and open source and is published under multiple licenses. The name I2P is derived from Invisible Internet Project, which, in pseudo-mathematical notation, is represented as I²P. Technical design[edit] I2P is beta software since 2003.[3] Developers emphasize that there are likely to be bugs in the software and that there has been insufficient peer review to date.[4] However, they believe the code is now reasonably stable and well-developed, and more exposure can help development of I2P. Many developers of I2P are known only under pseudonyms. WikiLeaks. WikiLeaks. WikiLeaks.