Socialism

i have a list of bookmarks for this, so take your pick of any of the following:

general, not ideology-specific

• Jacobin
• The Nation (US-oriented)
• Democracy Now
• Tribune (UK-oriented)
• Open Democracy (mostly UK-oriented, i believe)
• The Maple (Canada-oriented)
• The Intercept
• Truthdig
• Truthout
• Jewish Currents (Jewish-oriented, obviously)

ideology-specific

• Left Voice (Trotskyist)
• Industrial Worker (anarcho-syndicalist/syndicalist, published by the IWW)
• It's Going Down (Anarchist)

longer form or more irregular

• Current Affairs
• Dissent Magazine
• In These Times
• Spring Magazine (Canada-oriented)
• Protean Magazine

From the UK.

Can be a bit hit and miss, but it's worth a read for socialists: https://www.thecanary.co/

Might be considered Stalinist by some, but it often does have some interesting articles from from various strands of leftists: https://www.morningstaronline.co.uk/

The first name that comes to mind is Jacobin.

Different sources emphasize different regions and politics. Most Leftist sources are not trying to provide news in the same sense as mainstream journalism, as much as analysis and criticism for broader events and trends.

In the US, Democracy Now may be the best example of an anti-capitalist replacement for mainstream journalism.

The Guardian, which has both US and UK editions, provides a mixture of left-liberal and anti-capitalist journalism.

Other sources include, for current developments, Truthout, Truthdig, It's Going Down, The Nation, the Monthly Review, Vice, and Vox, and for deeper analysis, the Chris Hedges Report, the Real News Network, the Laura Flanders Show, the Hampton Institute, and Jacobin. More theoretical analysis is being produced by Democracy at Work and meta (Centre for Post-capitalist Civilization).

The last source, meta, is the only I have given, other than the Guardian, not dominantly emphasizing the US.