I'm surprised no one here has mentioned https://www.gnunet.org/ https://www.gnunet.org/ Currently they're pretty far off something robust and usable by relativ

I'm surprised no one here has mentioned https://www.gnunet.org/ https://www.gnunet.org/ Currently they're pretty far off something robust and usable by relatively tech savvy folks let alone the masses, but the direction is sound and I'm sure they'd be happy for help.