NOOOO problem. Simple solution. In one word, text. Two words, text editor. E.g., this Hacker News thread is at:
https://news.ycombinator.com/reply?id=42988455&goto=item%3Fi...
Sooooo, have that URL and the title of this thread in a simple, old-fashioned, file, text file, maintained with my favorite editor. Then, when want to revisit this thread, use the editor's excellent text search facilities to find the URL, and then, via a simple editor macro I wrote, one keystroke, and, bam, boom, have the Web page displayed via my pre-selected Web browser.
Text. Keep nearly everything important in just text. Source code of .NET for my startup's Web site? Text, never anything but text. Visual Studio? No thanks: Did I mention text? Posts at Hacker News? Text, both for my posts and those of everyone else. File system directory tree? Uh, again the T-word, with the tree from the Rexx function SysFileTree. In the editor, can sort on date, size, name, etc.