Scott Drummonds and Geoff White have released esxplot

esxplot is a GUI application that lets you explore the data collected by esxtop in batch mode. The program takes a single command line argument which is the esxtop batch mode output file. You can also simply start esxplot without any arguments, and enter a dataset file via the File attribute of the menu bar. Esxplot loads the data in this file and presents the metrics as a hierarchical tree where the values are selectable in the left panel. In the right panel, a graph is plotted (value over time) of the selected metric, in this way, you can "browse" the contents of these somewhat unwieldy files.

http://vpivot.com/2010/01/13/esxplot-1-0-released/