I'm a former mainframe programmer in the business world. I have seen Fortran, Python, and a couple of the other things mentioned here. Frankly, if all you need is a way to get reports from your data, you can not go wrong with Easytrieve Plus.
Yes, you can do some math functions with it, but nothing too fancy, that's not my point. If you want to do statistical functions, it's in there. But again, fancy graphs are not included.
Easytrieve's strength is it's fixed logic cycle, which takes a lot of the grunt work out of producing a simple report.
The only cons against Easytrieve, are it's limited platform availability. I'm not sure of the cost, but I'm pretty sure that it's not what I'd consider "free".
Zippy