An open source to-do app for bookmarks.
I use Unmark every day. I have for years. It is a rather simple web app that you throw a bunch of links at during the day – it automatically sorts them for you – and you clean them up later. Just like tasks. Unmark will automagically sort your bookmarks by read, watch, listen, buy, etc. And it will get smarter the more you use it. You can tag things and search thousands of links. I hope you like it as much as I do.