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Customizable Toolbar Buttons is a Thunderbird extension that lets you easily add custom toolbar buttons to your Thunderbird interface. With this extension, you can create and customize toolbar buttons for your specific needs.

This software provides an audio signal at the completion of a download. Compatible with Firefox 1.0-1.0, it alerts the user when the download is finished.

Canonical URL is a software extension that automatically creates a canonical link to your input in the URL bar. With this tool, you can configure the domains that you want to load when you enter a site name.

Create your own custom toolbar buttons with Customizable Toolbar Buttons extension. The easy-to-use tool lets you easily customize your toolbar with buttons tailored to your needs.

Extended Link Properties is a convenient Firefox add-on that displays file size when hovering over a link.

The Firefox add-on File Size (Statusbar) enables hover-statusbar functionality to provide additional information about file sizes. This add-on is an extension of the File Size program.

This software requires Firefox 0.9 - 0.9+ and allows users to set a password within extension options. Once set, users can unlock all options by entering the password in Tools -> Enter Password after restarting Firefox.

Sort Bookmarks is a Firefox extension that sorts bookmarks alphabetically. It allows users to easily sort their bookmarks with just a few clicks. This extension is compatible with Firefox versions 1.4.1 to 3.0.0.*.