There’s also Infinity for Everything in Development
Well Doctile Alligator is trying to implement a subscription model. Of cause you can also compile it yourself with your own API key since it keeps being Open Source
There is one for i2p
There’s The Pirate Bay, Zlib and a few i2p trackers. Probably a couple more. I don’t know any other.
Second time
Founder of Reddit and one of the developers of the RSS standard.
Huge Free speach advocate and very against intellectual “property”. He wanted knowledge to be free and accessible for everyone and killed himself after he was accused of things that could’ve brought him to prison for a very long time. He probably did these things which are kinda similar to things Sci-Hub does nowadays.