My software is free, so if my Mac users have to deal with a few glitches, so be it.
Almost sounds like cringeworthy famous last words.
I should probably know what you're working on, but I don't. Is it something that you could do on the Web? Just wondering.
FPC has a very nice "transpiler" that allows you to write a Web app's frontend in Pascal and convert it to JavaScript. Works quite nicely, although right now it has the feel of some of the other interesting, ambitious stuff that's part of FPC (ppcjvm), that it might not be utilized much.
See Part 4 of the Web App article series here if you have any interest:
https://macpgmr.github.io
Maybe so.

I maintain several desktop applications for analyzing specialized data sets. I'll send you a link in a pm. Their main use is at universities for research and teaching, but also at some agencies and industries. Several of them are in wide use, but because they are specialized, and there are other free alternatives, I have given up trying to make money on them and am working towards open sourcing them.
There is at least one similar application with a web interface, but most are desktop. I looked into Python, java, and a few other options before committing to Free Pascal. There is at least one similar Python application, but most of my end users don't want to deal with installing all the required libraries. I require a compiler that produces fast code, as I make extensive use of bootstrap statistics and vector graphics. I have therefore preferred compiled code, although I understand java is now quite fast.
Thanks for the link, I had a quick look. I don't know if it would be something I could use. If I understand, it would require a lot of code on the server side. Also, many of my users are likely to not have a web connection at any given time.