Thunderbird is a total redesign of the Mozilla mail component to produce a cross-platform, stand-alone mail application using the XUL user interface language. It has many new features, among them the ability to customize your toolbars the way you want them. a new look and feel with a large number of downloadable themes which alter the appearance of the client, and the ability to add UI extensions.
SiteFusion allows object-oriented PHP applications to operate as OS-native applications through a XULRunner-based thin client. The client connects to the SiteFusion daemon through an ordinary Web server, and applications run in separate continuous processes. Two-way communication is enabled, without the need for additional Web server configurations. The implementation of the XUL framework in a PHP class structure includes an implementation of the Mozilla tree view optimized for very large trees, supporting drag-and-drop, editable cells, and sorting.
Nx2 is a somewhat complex Web application that acts as a frontend to music databases. Based on XUL, it runs in Gecko based browsers such as Firefox. Built on this idea is a client/server model where several Nx2 frontends can connect to each other, creating a way to link together databases on different networks.
SEO Profesional Toolbar offers many SEO-related tools in one place. It can display PageRank, S-Rank, and the number of backlinks for visited pages. It stores the history of ranks for selected sites. It can highlight words, links, view the number of words, and more. The history of ranks and back-links is stored in a database, therefore you may watch how your pages evolve in time. All are equipped with beautiful colorful charts. You can view observed domains in the sidebar and check their ranks without even visiting them. The extension also includes a customizable list of handy SEO-related links. All this is packed together with a search tool for enumerating and highlighting words and different types of links.
COMPILIBRE allows you to easily build your own software and documentation compilations for Windows and Mac OS X. Compilations are ready to be stored onto a digital medium (such as CD, DVD, or USB key) or to be broadcast over the Internet. It has a Web-based interface in which you store the description of several software packages. Then, you choose which software packages you want to put into the compilation, and COMPILIBRE produces an ISO file, a zip file, and a BitTorrent file that contains the software, their descriptions, their documentation, and a multi-installer program.