I've worked with these types of bridges before. They are terrible if you want to keep the program running and intermittently call Mathematica throughout the cou

I've worked with these types of bridges before. They are terrible if you want to keep the program running and intermittently call Mathematica throughout the course of a multi-hour session. If you have a small script that makes a single one-off call to Mathematica, and the interface already exists for your language, which it probably doesn't, even if you're using an extremely popular language, and even though you're paying hundreds of dollars a year just for PERSONAL use, then things can be ok. But if you want to make a bunch of calls and keep the program running reliably then you're SOL. Oh, and don't even think about deploying. It will cost you so much that it's more cost-effective to just rewrite the thing or do the work of switching out with a different library/tool.