As a member of the Electronic Frontier Foundation, I support The Tor Project.
"Onion routing" started off as a DoD project in the 1990s to allow secure and anonymous access to sites on the Internet.
Today Tor, based on an MIT implementation started about 20 years ago, is available for everyone to use. You can read more about Tor's history here.
Once you have installed it (this won't work until you are using it), click here to access the darknet version of this site: http://rumpeleinprdita25sqckmqg3pixqiz763wu67p3lpo5rsbmt267kkyd.onion/tor.php.
For those who arrived on this page because they live in a place with a repressive government that takes a dim view of VPN usage and that sort of thing, I recommend using a bridge. Here are the usage statistics for the bridge I operate for the past two weeks: