TooManyTabs - Ever tried having 20 tabs or more open in Chrome?
Tidyfavorites - User-friendly app for your favorite bookmarks.
Dustman - Firefox extension to close unused tabs.
Bookmark2 - Bookmarks2 is a powerful productivity tool that makes is much easier for anyone to save their links...
Pocket - When you find something you want to view later, put it in Pocket.
Linkman - Linkman Pro allows for managing large amount of URLs in its own database.