Webbla is a program that comes as an alternative to using the bookmark manager that's being integrated into your default web browser. This application provides you with a quick solution for inventorying your bookmarks, allows you to preview your favorite websites, and lets you import or export bookmark lists with just a few clicks.
To add a new bookmark to your collection, simply click over the "+" button from the bottom side of the interface, and enter the URL. You can use the integrated search utility to immediately find the bookmark you need and preview websites with just a few clicks. There's also an option to automatically open a selected bookmark in your default web browser.
Furthermore, you can import and export HTML files containing bookmarks, rate the stored items, and even add tags to your favorite webpages.
My only problem with this application is that it might take a while to load the bookmark content in the Preview screen.
To sum things up, Webbla is a helpful Mac application that proves to be of good use if you're dealing with a large amount of bookmarks and you're looking for an efficient way to organize them. It's easy-to-use, feature-rich, and free.