Bookmark Magic
Bookmark Magic is an Internet bookmark conversion utility. It can convert Internet Explorer favorites, including subfolders, into Netscape bookmarks. Bookmark Magic can also load html files. Html can be viewed as source or hypertext. Duplicate bookmarks can easily be removed. ... If desired the bookmarks contained in the html can be sorted by description or the Netscape date tags can be stripped from the html.
http://www.cybermatrix.com/download/bkmagic.zip - 837Kb - Download - Screenshot

SurfGem
Powerful URLs bookmark manager with a fully featured multi-tabbed browser. SurfGem is not dependent on any web browser to store URL bookmarks. It's an independent application that you can use with almost any web browser side by side with it's handy small view facility. ... Some of your bookmarks in one browser the others in a different one - an organized mess! ... How do you remember which bookmark is in which browsers bookmarks? ... If it's compatible you have to import your bookmarks every time you change a browser.
http://www.gemx.com/upl09/surfgm31.exe - 3Mb - Download - Screenshot

Link Commander Lite
In 1994, there was not much to see on the Internet. I had only a few links in my Internet Explorer favorites. However, when a friend had recommended to me that I try Netscape, I immediately faced the bookmarks synchronization problem. Now I have 3 different browsers at work, 2 browsers at home... Link Commander provides advanced capabilities to manage your bookmarks: searching, link validation, automated duplicate elimination, etc. ... You can open bookmarks with any browser installed on your computer.
http://www.resortlabs.com/bookmark-manager/lc_lite_setup.exe - 3Mb - Download - Screenshot

Bookmark Converter
Convert or merge bookmarks between all big browser brands, in any direction. Netscape, Internet Explorer, Opera, Mozilla and Firebird/Phoenix, all versions. * No limit on size of bookmark collection. * All bookmark info is converted (name, url, comments and so on) * Order of bookmarks is... * Find duplicate bookmarks. ... * Synchronize (merge) bookmarks automatically on system boot. ... * Very fast and easy to use, anyone can do it. ... * Fully scriptable command-line conversion (optionally fully invisible).
http://www.magnusbrading.com/ftp/bmc31.zip - 4Mb - Download - Screenshot

Bookmark Buddy Unicode Edition
Organize your bookmarks/favorites, shortcuts and logins simply, quickly and reliably with this intuitive, feature-rich bookmark and login manager: To retrieve a bookmark quickly: - Navigate to any bookmark in three clicks: category, subcategory, bookmark. ... Use keywords and a star rating to help you find bookmarks again. ... If you have bookmarks that are commercially or personally sensitive, protect your entire bookmark collection (web addresses, notes, log-in details, the lot) with 128-bit Blowfish encryption.
ftp://ftp.bookmarkbuddy.net/bmkbuddyU.exe - 470Kb - Download - Screenshot

PDF Bookmarks
Utility to automatically create/edit/delete PDF bookmarks. Edit bookmark names, colors, styles, and actions. Create bookmarks from outlines, write bookmarks to text files, remove bookmarks, create bookmarks from text and Excel files, etc.
http://ic.net/~kusluski/pdfbm.exe - 3Mb - Download - Screenshot

MarksMan
MarksMan is a tool for iPod users who enjoy listening to audiobooks (I'm very definitely one of them! ) One of the common complaints of such users is the fact that the iPod often seems to lose bookmarks in audio books, and there is no easy way to back up old bookmarks, nor a way to create... I wrote MarksMan so that iPod users could take charge of all of this.
http://www.ipodsoft.com/index.php?/downloads/marksman - 395Kb - Download - Screenshot

AcqURL
AcqURL is not only a bookmark manager, it is the simplest and most powerful way to find, organize and access any data you choose. AcqURL allows you to create your own searches on the fly by letting you decide which search engines you want to use for your search and which topic to search on. ... Bookmarks can also be sorted in alphabetical order at any time. ... AcqURL will also let you check the validity of your web site bookmarks as well as show you if and when the site was updated. ... You can also print your bookmarks with margin and line spacing the way you want.
http://www.acqurl.com/aq.zip - 1Mb - Download - Screenshot

QuoBox
QuoBox allows to intuitively store, organize, search and launch Internet Bookmarks. Bookmarks are located in graphical units called Groups. Groups can have different colors and can be placed on the Groups Tables by likeness or relation. Basically the similar way, like paper sheets on the desk. ... This approach has advantage when adding new Bookmark too, because the user is immediately aware, if or how many Bookmarks currently referencing such URL. ... Or in situation, when two or more Bookmarks have the same Title, but belonging to different Groups, Categories or Folders.
http://www.neborak.com/file/QuoBoxSetup.msi - 3Mb - Download - Screenshot

NetMarks Manager
With NetMarks Manager you can store and easily manage thousands of bookmarks. Full integration with Internet Explorer and Firefox lets you create and access bookmarks directly from a toolbar button or menu option, while you are browsing the web. Use the powerful search engine to locate bookmarks... The many features include: - Get and store bookmarks from any open browser window, and optionally Windows Explorer windows - Manage duplicate bookmarks, and check for duplicates when saving a new bookmark - Support for multiple bookmark databases - Minimize to the system tray with instant mouse...
http://www.wetasoft.com/NetMarks/nmsetup.exe - 4Mb - Download - Screenshot