ClassicMenu Indicator is a notification area applet (application indicator) for the top panel of Ubuntu's Unity desktop environment. It provides a simple way to get a classic GNOME-style application menu for those who prefer this over the Unity dash menu. Like the classic GNOME menu, it includes Wine games and applications if you have those installed.
tmux-applets is a collection of tmux "applets" that are designed to be used in tmux's status bar. They are non-textual, using blocks of color instead. Currently, there are two applets provided. tmux-cpu-freq displays the CPU frequency level as colored blocks, and tmux-ping, which tries to ping a host and displays success or failure as a colored block.
Compa is a GNOME panel applet which can display the output of any system command on the panel. It can also display the output of a different command in its tooltip, and launch a different command when clicked. The text style can be modified using the Text Attribute Markup Language.
JFileUpload is a Java applet that allows uploading of files and folders to any Web or FTP server. This component can be integrated into any application, whether the server-side technology is JSP/Servlet, PHP, Coldfusion, CGI, or Microsoft ASP. The front-end provides an upload progress bar, a cancel button, and drag-and-drop support. JFileUpload supports very large uploads over 2GB and can resume broken uploads. Its colors, size, and language can be customized.