@ONLYOFFICE @aproposnix idk how good is their API since I'm not a developer. But I always use Apertium https://www.apertium.org/index.spa.html?dir=spa-arg#translation which is free software. Their contact email for collaborations is firstname.lastname@example.org
Instead of google I use Lindat for Czech. I beleive they have an API but it's just for personal use. https://lindat.mff.cuni.cz/services/translation/
This is by far the best Czech translation software I have ever found. It's an interesting project.
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