LinkStash is a compact tool designed to help you manage your bookmarks across Internet Explorer, Firefox, Opera, Chrome, and Netscape through a single interface. You can also select your preferred web browser for opening bookmarks and import existing bookmarks from the chosen browsers.

Xenu's Link Sleuth (Xenu for short) is a well received by industry and widely used utility designed for searching and checking the validity of all links on a website or in a file. It may be the smallest but most powerful and very simple to use broken links checker you have seen.