eArgon is for geologists interested in geochronology
Get it with iTunes http://www.apple.com/itunes/
See published papers for tips on how to use it. User group suggestions on developments and improvements welcomed. Report any apparent errors or omissions so we can fix them and upload a new version.
Selected references that use this program
Skewed orientation groups in scatter plots of earthquake fault plane solutions: Implications for extensional geometry at oceanic spreading centers
Boudinage of a stretching slablet implicated in earthquakes beneath the Hindu Kush
Two datasets to get you going
1) a registered image - here
2) some recent earthquakes from the Lamont-Doherty Earth Observatory Global CMT project, in NDK format.