Listango is described as 'was born out of a simple idea' and is a Bookmark Manager in the Web Browsers category. There are more than 10 alternatives to Listango for a variety of platforms, including Online / Web-based, Windows, Google Chrome, Firefox and Mac. The best alternative is Firefox Sync, which is both free and Open Source. Other great apps like Listango are historious (Freemium), LinkLocker (Paid), iCloud Bookmarks (Free) and Bkmks (Free).
Passfindr is a web based premium Personal knowledge base, Password manager and Bookmark manager application to securely store passwords and other sensitive information in a virtual vault locked with individual master passwords.
Sorted is an extension for Firefox. Use this if you find yourself manually creating bookmark folders. Just enter the words commonly occurring in your bookmark titles and this extension will automatically create folders and move your bookmarks.
Vhumo is a Cloud Bookmark Manager to organize your favorite websites into personal categories and access from all devices, wherever you are. You can share with your contacts and import from external platform.