Original: I2P ( originally from pseudomathematical notation IÂ P , short for Invisible Internet Project , although 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 ) .
Simplified: I2P ( means Invisible Internet Project , 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 ) .