I realize you're probably talking about news articles but if you want to keep track of PDFs, nothing beats Zotero.

My brain

Read later feature in Reeder for articles and Raindrop.io for all other links

Raindrop browser plugin.

Omnivore. Telegram messages. Obsidian

Browser bookmarks. My trick is I make a new folder every month, for example “2024-01 Bookmarks”, and put it in the bookmarks bar. Whenever I realize I’m leaving a tab open because I want to look at it later, I put it into the current folder. That way I know it’s not lost and I give myself permission to close it.

When a new month comes around, I stick the previous folder in an “Archive” section and make a new one. It costs nothing to keep them forever, but avoids the current list getting out of control.

If I'm on my computer, I use Push Bullet. It sends the link directly to my phone but I can also go back to the Push Bullet app anytime and find it. If I'm on my phone, I just keep that tab open on Chrome until I read it.

I used to have a folder in my internet favorites. Then browsers did away with browser favorites and I switched to having a "remind me later" section of my Discord server.