URLBase - Version 4.0 Urlbase 4 is a powerful bookmark and favorites manager for all major browsers. With urlbase 4 you can import, export and synchronize your links from browser to browser or though a powerful easy to use interface. Options to export your links to HTML format or send your link collection by e-mail make it easy to publicize or share your links on the Internet. Management utilities including the ability to validate links and check for duplicates allow you to keep your links accurate and up to date. The interface can be customized and automated to meet your personal preferences.