Another place to start: Privacy Guides has a history of tracking quite a variety of computer networking tools (browsers, data providers, Internet services, software, hardware, desktop and phone, even operating systems),
blurg
One of the greatest advantages of the totalitarian elites of the twenties and thirties was to turn any statement of fact into a question of motive. -- Hannah Arendt
The EU has such, General Data Protection Regulation (GDPR), works reasonably well. Pretty good place to start.
Desktops, tablets, phones: Kiwix can use a bunch of reference works downloaded to your machine(s), from Wiktionary to the 100 GB Wikipedia (with thumbnail pics) to Gutenberg books.
might
That word is carrying a mighty big load.
What's one that doesn't suck?
True in a way. However, there is a rather large collection of speculation on the Internet that is quite an undertaking to correct. And a large population of people and bots willing to speculate. Also, having once been speculated, each speculation takes on a life of its own. If it gets much more substantial, forget Skynet, we're busy creating Specunet and its sidekick Confusionet -- an insidious duo.
(Uhhh, AI in charge of censorship? So no one knows how decisions are made? No one can know with AI. That's just a large mistake. The other ideas have some merit though.)
Sadly, Syncthing is dropping Android support.