It does the same thing, recommending Firefox Beta or Nightly. For Tampermonkey, FediRedirect is a full browser extension not a script.

Let me show you some examples (you should be logged in to fosstodon, or it will redirect you to lemmy again):

• Programming Humor community: https://fosstodon.org/@programmer_humor@programming.dev
• ManeraKai account: https://fosstodon.org/@ManeraKai@programming.dev
• This current post: https://fosstodon.org/@ManeraKai@programming.dev/110699662543179133
• Your comment: https://fosstodon.org/@samokosik@lemmynsfw.com/110700725499366522

Support is getting better over time.

It can now work on Firefox Mobile, but Firefox doesn’t allow installing any extension for security reasons (idk if for compatibility reasons too), you can only install “recommended extensions”. There’s a way to install it on Firefox Nightly, but that’s too advanced.

Yes, also pleroma and misskey.

It’s analogous to the name LibRedirect so.

Yes: https://github.com/ManeraKai/fediredirect

Kubuntu (Ubuntu but KDE), both great KDE UI and stable kernel. I use Kubuntu LTS.