FLib is a free, open source library of high-quality Java components. It currently contains wizard and calendar components and a table layout manager. The wizard component makes it easy to create multi-step user dialogs. The calendar component can be used by itself or as part of a combo-box drop-down. The table layout replaces GridBagLayout and is much easier to use.
While the components are in English, complete localization is possible. The calendar component is mostly internationalized as is and automatically adapts to the locale.