From Optimal Access:
3D Tabbed browser (extension for Firefox) means 3 sets of tabs per window One set to Group your favorites by interest and/or project (Group Tabs), another set for storing your favorite URL's (Page Tabs) and a third set for temporary browsing (Temp-Page Tabs). Set's of Group tabs are stored in Portal windows. You can switch between portals and archive older projects. Optimal Access comes with a Built in RSS reader and special curation folders for saving articles. To subscribe to feeds you simply drag the RSS link to the Page Tab area and save it. To save an article your simply drag the article to the desired curation folder, the program will scrape the headline, URL, image URL, description, Publisher and Author and let you tag it. A Powerful search feature let's you search all your tab captions, RSS feed content and Curation folder links.