Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Subtitles Downloader by Checksub - Sometimes you may want to export or edit the subtitling of Youtube videos that you have uploaded or that you're fans of.
Clever - syncing between education applications for K-12 schools
Mate Translate - Ultimate translation app for Mac, iOS, Chrome and many more
Claroline - Claroline is a collaborative eLearning and eWorking platform.