I recently released a shareware program called "EnergyLogger", a simple native GUI based, cross-platform application designed to take the place of the Python scripts developed for the original Tweet-A-Watt project.
The program adds a few features missing from the Wattcher software, including:
• Energy cost estimates (hourly, daily, weekly, monthly and annually)
• Strip chart display of Amps/Volts and Watts
• Kill-A-Watt calibration based on a three step process
• Alarms when load remains outside upper or lower limits for a user specified amount of time
• Tweeting alarms in addition to tweeting daily usage statistics
Rather than logging data to the Google App Engine (GAE), EnergyLogger posts readings to a Google Doc spreadsheet for further analysis.
For more info: http://www.miloslick.com/EnergyLogger.html
Obligatory screenshot:

The cost is only $10 US and includes free updates to all 1.x versions and online support. Give it a try. I'd really like to hear your feedback.
Thanks.
Bill K


