At some point in history we collectively gave up on bookmarks and just resorted to piling up hundreds of tabs in our browser windows.

I still fancy the idea of a locally running and private search engine, that tracks everything I do on the web, so I can search my browsing history and easily rediscover things I've read months or years ago.

@fribbledom Actually, Firefox' address bar comes pretty close to this (searching only for urls and page titles in browser history but this is extremely useful already)
@fluxx @fribbledom I case you don't already know and/or use them: there are a couple of GREAT modifiers for the addresse bar:
https://support.mozilla.org/en-US/kb/address-bar-autocomplete-firefox#w_changing-results-on-the-fly
Address bar autocomplete suggestions in Firefox | Firefox Help

When you type into the address bar, Firefox suggests pages you've bookmarked, tagged, visited before or have open in tabs. Learn more.