NLNet – NLNet, the best damn supporters of free software on the planet. We owe it all to them.
Other anonymity networks:
I2P – An anonymizing network layer which supports a number of different protocols.
Tor – Onion routing, largely used for web browsing.
Other digital rights defenders:
Wikileaks – Censored documents published.
Cryptome – documents for publication that are prohibited by governments worldwide, in particular material on freedom of expression, privacy, cryptology, dual-use technologies, national security, intelligence, and secret governance — open, secret and classified documents.