Definition of independent for the purposes of this question: source is not owned by a for-profit corporation, is not financially backed by any billionaire (either directly or via foundation or nonprofit organization) and is not financed by any national government (even if run without oversight).
It can have any perceived bias or political leaning.
Edit: Just to add it has to be written in English.
I came here to promote those two outlets as well. Democracy Now and ProPublica are two of the only sources I have nearly absolute trust in. I still consume them critically, but I trust their work because they’ve been doing consistently high quality journalism for years. They’ve never let me down, so I throw them a few bucks whenever I can afford to. It’s probably not a coincidence that they both do more of the muckraking type of journalism than anyone else these days. When I think of ‘traditional’ hard-hitting journalism, these are the two I think of.