I don't know what is available for free. Nor do I care. I don't even care what indicators are in the program, or how they work, or why they work. I trade the S & P 500 E-Mini, but it could just as well be anything else, as I don't care what I trade either. As far as I am concerned, all of that stuff if best left to people who enjoy working with computers and algorithims and programs and etc.
I have tried many many things over the years, both purchased and free. Most didn't work for me. But I would not be so bold as to tell anyone else that they would not work for them because, as least as far as I am concerned, the money management part of it is just as critical as the trading part of it.
I am not saying that AbleTrend doesn't have losses. It most certainly does. But at least for me and the way I use it they are less than the gains. And really, that is all I care about. All I care is whether it works for me on whatever it is I am trading.
If you can get it for free and it works for you, fine. I am happy paying for it because it works for me. That is all I am saying. It works for me, and it works well.