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Dyalog is an APL vendor, they also offer a non-commercial license and high quality documentation. They have a case study of a school management system that is a record keeping system [0]. [0] https://www.dyalog.com/case-studies/education.htm

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Thanks! Btw, what would be the open source alternative (of APL) that is popular and used in production?

There is a GNU implementation of APL (https://www.gnu.org/software/apl/). Not sure if it is used in commercial applications or not. I would imagine that if you are doing commercial work with APL you are going to be paying for Dyalog.

> you are going to be paying for Dyalog

Not really. As I see APL is ISO standardized and there are many implementations.

There are many implementations but not as many that are active (here is a brief list https://en.wikipedia.org/wiki/APL_(programming_language)#Mod...). Dyalog provides more than just a interpreter/compiler but an entire development environment.

Probably J, if I had to guess. I'm unaware of how much production use it has.

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