https://torrentfreak.com/youtube-orders-invidious-privacy-software-to-shut-down-in-7-days-230609/
EDIT
These serve the same purpose as Invidious (docs.invidious.io), but are separate projects. Each has its own features.
If you just want to watch videos without clicking through to jewtube, you can use yt-dlp (github.com). It's a command line program. There's an optional GUI to install separately if you really want that, but I haven't tried it: yt-dlg (yt-dlg.github.io). If you already have a working installation of Python (python.org) then both can be installed with pip.
(post is archived)