Java, *NIX, testing, performance, e-gaming technology et al
I've been doing a lot of Swing lately (don't laugh, it's still a big deal). There one or two basic things that are missing, so I've knocked together some lightweight implementations with no licensing.
They're usable but a bit primitive. For example, you can't change the order of pages in the wizard, and the form layout doesn't do any wrapping components. The class ExampleWizardPanel showcases them. You may wish to consider JGoodies FormLayout in preference to this.
The code is on Github.