You offer a lot of .resx files for localization your controls here.
But why don't you invite people to translate them and publish their translations on your server too?
Right now, every project has to do the same job: Translating the .resx files. Why don't share the work on a single place: Your server?
Or better: You would implement the translated .resx files into your NuGet packages. In this case, the developer working with your tool has as many advantages, as possible.
If you offered this, I would share some German translates .resx to you.