http://nkkn5gol4qp6ymwomrjeyiwqrxkthjfqvw7k6jlpafcvslwvbj52caqd.onion/ABOUT.html
There are no complex scripts or trackers here — only static HTML and PDF files. The owner accepts donations in Bitcoin, but all content remains free. The resource's motto is "IN UNIX WE TRUST", and its main goal is to preserve knowledge that is gradually disappearing under a layer of commerce and simplifications in the modern Internet.