To blatantly toot my own horn here, but for visual exploratory data analysis, I just released Popily (http://popily.com).
It is meant as a no-code solution to get the layout of a dataset and do some fast EDA. Drag data in, then click around your data. It isn't a replacement to in-depth analysis, but it is a heck of a lot faster for EDA than making dozens of charts in Matplotlib.