I took a look at the Xtar PB2S 2 charger. A promising product, but I haven’t yet decided if it lives up to the promises.
The Wire Wizard shows you a multitude of stats about your coil, and lets you download temperature curves for the DNA 200.
Gareth Witty reviewed Steam Engine and did a quick overview of the features. From the description: Another web based and app based coil aid, this one has a few more settings to use.