The Coolest DHTML Calendar is a DHTML calendar widget that works with IE >= 5.0, Mozilla, Netscape >= 6, all other Gecko-based browsers, Opera 7, Konqueror, and Safari. It comes with eight color themes, and doesn't use frames or external windows, but uses Web standards and is lightning fast. Keyboard navigation is allowed, and it can optionally show a time selector.
Luxor is an open-source XML User Interface Language (XUL) toolkit in Java that lets you build UIs using XML and also includes an ultra light-weight, multi-threaded Web server, a portal engine, and a template engine. It is also Web Start-ready, as everything fits in a jar and requires no loose files.
Surftree is an applet that displays data organized in a spreadsheet as an expandable tree on a Web page. The tree can be 9 levels deep and have over 65,000 nodes. Each node can display up to 4 independent Web pages or JPG images. It works with Java 1.0 and 1.1+ and in any Web server environment.
ThinWire is a development framework that allows you to easily build applications for the Web that have responsive, expressive, and interactive user interfaces without the complexity of the alternatives. While virtually any Web application can be built with ThinWire, it especially excels at enterprise applications, with its highly interactive and rich user interface components. Using ThinWire to handle the view-layer of your Java EE (J2EE) application can provide better user experience and with shorter development time.