The new version of AcidMaps has been released with a great change, it works as a Geoserver plugin.
That means you can use your own configured WMS layers to build Heatmaps, Isolines and other interpolated maps ON THE FLY!
For who doesn't know about AcidMaps:
You can see a full demo built using Flex/OpenScales where you can play with the parameters to see different results.
If you want to give it a try with you own data, take a look to the Quick Start instructions, it is really simple!
There's a reference doc where you can get more details.
Please, let us know your opinion because it's still in beta and your experience will be very helpful.