Research like a pro
I'm a big fan of this extension. Having used all the other highlighting apps this one is actually my favorite because it allows me to sync into Notion ( my document editor) and I really like the on-the-fly categorization feature. I using it for article reading and market research and it helps me extract information and group it quickly around different ideas I'm kicking around. Then later it definitely helps me in my writing process because I don't have to go back and find the information I am trying to work with. Occassionally, the highlighter is a little buggy but it usually resolves itself if I SHIFT refresh. A lot like Diigo but free and with Notion
Zeppelin Labs
https://jgeorge.dev
dreyliky
https://hylinker.net
https://zixflow.com
Intermezzo Labs
https://highlightion.com
https://thymeline.co
xukeek
Katsute
https://copytonotion.com
https://bookmark.style