Started sharpening my teeth with a program called Justnn, the free portion of Easynn. It works for me so I still use it. WEKA is also free and seems to have more options. I've been playing around a bit with it.
If this NN dog can hunt, I'll probably see what Matlab and others have to offer for my particular needs after I play with WEKA.
While Justnn is not as robust as WEKA, Matlab, and others; it does what I need more quickly than others...for now.
bably already know, its more about the data, the preprocessing of the data, and the structure of the NN, than which calculator you're using.
Let me know what you think about Justnn and WEKA if you check them out.