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GNUnet - anyone used it?
https://en.wikipedia.org/wiki/GNUnet
"#youbroketheinternet. We'll make ourselves a GNU one."
Christian Grothoff, maintainer of GNUnet, in Berlin on August 1, 2013 at the "#youbroketheinternet. We'll make ourselves a GNU one." event.
@freeschool been on there a couple of times. One can definitely find some interesting articles.