The Khan Academy website is now open for translation!!
We use crowdin to translate all the text on the Khan Academy site: the homepage, the exercises, the class reports, the video descriptions, the articles and tutorials -- everything but the video subtitles.
crowdin is a web service that provides a platform for translation. You are provided with all the text that can appear on our website, and can translate that text into another language. Once these translations are uploaded to our site, users can view our site in that language!