Little Bookmark Box
I decided a few days ago that I needed to have a standalone bookmark program since I've never gotten into using the various browser bookmarking options in a reliably matter. I have used pinboard but it does require a further step to connect to that site and so I've been evaluating Little Bookmark Box.
I decided that I can make best use of this application when I assign a keyboard shortcut to it to bring it to the foreground and then simply drag a url from my browser of choice into what I've setup as a miscellaneous collection box of all my stored bookmarks. I then tag the various bookmarks and setup various Mark boxes to dynamically contain the different bookmarked sites according to specific rules.
Here's a view of my Little Bookmark Box window with a typical setup for me.