mozCalc - Localized desktop calculator application allowing input in both "standard" and reverse polish notation. - http://mozcalc.mozdev.org/
Outliner - Allows organizion of notes into a tree. - http://outliner.mozdev.org
One Click Dynamic Sidebar - A dynamic sidebar for Mozilla apps that include many programs in one sidebar. - http://oneclick.mozdev.org/
Checky 2.2 - The Checky plug-in for Mozilla, Firefox and Netscape allows for web content and resource developers to easily access free and commercial online validator services. - http://checky.sourceforge.net/
Aphrodite - An alternative user interface for Mozilla. - http://aphrodite.mozdev.org/
Extension Room - Available extensions for Mozilla. Also available are Firefox and Thunderbird extensions. - http://extensionroom.mozdev.org/
ReloadEvery - Automatically reloads a web page every so many seconds or minutes. - http://reloadevery.mozdev.org
Googlebar L10N - Localized Google toolbar for Mozilla users. - http://googlebarl10n.mozdev.org/
NewsMonster - A news, weblog, and RSS aggregator that runs directly in your Mozilla web browser. - http://www.newsmonster.org/