wmsystemtray is a system tray using the freedesktop.org system tray protocol that was implemented as a Window Maker dock app. It has the ability to display more than one dock window to make room for more tray icons, and the ability to scroll through the icons if more are present than will fit.
wmphoto+ displays the images in the dockable application window. You can switch the images manually or display them as a slide show. Each image accepts up to two related commands. You can run them using mouse buttons when the application displays the image. Using the alternative configuration directories, you can run a few instances of the program that display the different sets of images.