Https://curius.app/ fills this niche for me (not affiliated, but have quite enjoyed it). - Source: Hacker News / 6 months ago

Though you can't respond to others comments for now, but thank you for voicing the interest in that! There are some other extensions that provide just the commenting part (e.g. https://web.hypothes.is/, https://curius.app/, https://glasp.co/), but I find that they suffer from the cold start problem. - Source: Hacker News / over 2 years ago

There are many new tools emerging. Here is a raw list. Some are still alpha. Most are not free. And I believe only some of them specifically parse/import social media links. https://mymind.com/ https://betterstacks.com/ https://fabric.so/ https://allclues.ai/ https://sublime.app/. - Source: Hacker News / 4 months ago

Omnivore looks pretty good. I should try it out. I've been using and paying for this: https://mymind.com/ I like it better than any of the many alternatives that I have tried/researched thus far. - Source: Hacker News / 7 months ago

I came across THIS a while back and have been using it quite a bit. (I'm not affiliated with this site in any way.) For anything online its great. Problem for me is I would like something like this for local data, similar to OP. Source: 11 months ago

I save everything in My Mind. https://mymind.com/. Source: 11 months ago

MyMind is good too. I use them both for different reasons. I love that it uses AI to analyze images, articles, and websites and automatically tags them accordingly; the search feature is top-notch too. Source: about 1 year ago