It notices when duplicate bookmark is added.

An extension that aims to help you quit cigarettes while you surf the web or wait for new email.

Makes tabs more efficient for power users, bringing tab grouping, and tweaks such as multiple rows of tabs or displaying tabs as a tree.

Changes the cursor to indicate the type and target of a link.

Provide several tools to install and manage extensions and themes locally.

The Wikipedia extension makes editing of Wikipedia pages easier by adding a new toolbar.

Allows users to customize the browser's appearance on the fly.

This extension allows for customization of the Add Bookmark dialog. The bookmarks tree can be automatically opened and elements can be hidden. The entire dialog can even be bypassed.

Use multiple sidebars simultaneously.

Display the date and time in browser's status bar.