Firefox 3 lets you tag your bookmarks, but it doesn't give you a great way to browse your bookmarks by their tags. TagSifter tries to. Select a group of tags in the sidebar or menu, and TagSifter shows you all the related tags and bookmarks. Or search your bookmarks with set operators, like "tag1 - (tag2 + !tag3)". Comes with a tool to help tag your existing bookmarks as you move to Firefox 3.
Add "Go Parent Folder" menu to context menu in The Library list view and Search result in Bookmarks Sidebar.
Enhanced Information on Tooltips for your Bookmarks.
Synchronizes your bookmarks, passwords and password exceptions between browsers. Uses your own (or third party) web or ftp server so you have complete control and privacy.
Link Pad is a sidebar that you can drop links onto to save for later without cluttering your bookmarks. Find a link to a YouTube video you want to watch, but don??™t have time now? Drop it into Link Pad (or even just on Link Pad??™s status bar icon), ...
Add Unsorted Bookmarks Folder to Bookmarks Menu