This is the most advanced visualizer I've seen so far. And it's also the first restricted visualizer I've seen: it has an expiration date, and no source code to help you build your own for this one...

With that preface out of the way, let's talk about the visualizer. This is an industrial-strength Dataset Visualizer. Miha Markič has taken all of his experience coding with datasets, and included everything he thought he'd ever need while debugging code dealing with datasets. It results in a user interface which is borderline cluttered at times. But Miha assures me that everything in there will be useful. :0)

Check it out! Or at least check out the screen shots...

[see my visualizers category for discussion/documentation and links to other visualizers]