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.
Good journalism tends to cost a lot, more than independents can gather. Especially independents that don’t do it to promote their agenda.
The only one that comes to mind is CSM. It’s nonprofit, and in spite of the name, there’s been nothing religious about it.
The international version of Der Spiegel and the Singaporean Straits Times are backed by for-profit organizations, but I appreciate their reporting.