Can you support third-party language files?

[FengYanMoShen]

as given above

[Iridium-IO]

Theoretically yes, I've never done it before but I can give it a crack. Other people would have to submit language conversions though

[panda361]

Theoretically yes, I've never done it before but I can give it a crack. Other people would have to submit language conversions though

Could you give a word list or some hints for adding other languages via PR

[Iridium-IO]

Right now it's hardcoded in English so I'd have to go through and separate it into .resx(?) files first

[wuyilingwei]

I can provide documents in Simplified Chinese and Traditional Chinese (maybe)?

[IlgazC]

I think this tool, from Mozilla, with BSD license (not GNU-like) can be used. The trick is to make it accessible to non-technical people who are fluent in language. Firefox is one of the rare perfectly localized to Turkish apps with no "out of place" things.
https://github.com/mozilla/pontoon/