DOM Tooltip allows developers to add customized tooltips to Web pages. The tooltips are controlled through style class definitions and respond to events such as "mouseover", and avoids possible collisions with form elements such as select boxes and screen edges. While originally designed to create context tooltips, it is also possible to create a wide variety of dynamic layers, such as embedded windows, context menus, and hidden blocks. Additional features include sticky tips, tooltip fading, lifetime, relative positioning, class assignments, width adjustments, mouse dragging, captions, directionality, offset adjustments, adjustable activate/deactivate delay times, snapping to grid, fate adjustment (hide or destroy), and references to created tips. It supports Mozilla/Netscape6+, IE 5.5+, IE on Mac, Safari, Konqueror, and Opera 7.
Google Gadgets for Linux provides a platform for running Google Gadgets under Linux, catering to the unique needs of Linux users. It's compatible with the gadgets written for Google Desktop for Windows as well as the Universal Gadgets on iGoogle. There are two main components to the application: one is a common gadget library responsible for running and presenting a gadget, and the other is a host program that allows the user to choose gadgets and run them on the desktop. Currently it has hosts written for GTK+ and Qt, with the GTK+ host offering a sidebar similiar to that of Google Desktop for Windows.