You mentioned in another comment that if APL is to go anywhere, that it needs to be open sourced. Unfortunately, the cost of Dyalog and the fact that it is clos

You mentioned in another comment that if APL is to go anywhere, that it needs to be open sourced. Unfortunately, the cost of Dyalog and the fact that it is closed source are the main reasons why I've ended up using J. I appreciate that Dyalog is free for non-commercial use, but I think that part of what makes a programming language successful is if people can start using it in small ways to make their work better. For instance, at my previous job we started using Go for small things and it eventually took on a larger role once we saw how well it worked out in practice. Had we needed to pay to use Go for those small things, we never would have even tried it in the first place. I realize that the Dyalog company needs to actually make money somehow, but I wonder if they are aware of this problem. I did email Dyalog to see if using Dyalog for my work at a non-profit constituted commercial use, but they said that it did. :( Edit: The reason why I haven't used GNU APL is because it seems like getting it to work under Windows will be difficult, and my work is unfortunately a Windows environment. Maybe I should give it a shot anyway.