Link checking is not a foolproof process. Servers may or may not allow link-checking probes. And link checking can take hours over slower modems, so it's best to schedule it for an idle time. URL Statistics Bookmark managers track usage and other statistics for the URLs in your collection, such as the time and date you last visited a page. Some bookmark managers provide more extensive tracking information, including the date the bookmark was added to the collection, the last time a link check was performed, and the last time the page was modified.
Some pages change frequently, or are optimized for a specific type of browser.
A few bookmark managers allow you to assign specific properties to a bookmark, such as which browser is to be used for viewing the page, or to individually select a URL for link checking and update monitoring without requiring a check of all bookmarks in your collection. A few also provide user-defined fields for adding additional categorization information. All bookmark managers provide tools to publish bookmarks to HTML Web pages, a necessity when you want to share links, especially when you want to prevent users from modifying your actual collection of bookmarks. There are dozens of bookmark managers available, ranging from simple freeware programs to sophisticated professional products. For this review, I'm excluding simplistic programs, as well as those that offer additional features above and beyond bookmark management, such as Enfish Tracker Pro, BullsEye, and InfoSelect.