Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
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.
Lingvanex Translator for Slack - Auto-translate messages, documents and images in Slack
Mate Translate - Ultimate translation app for Mac, iOS, Chrome and many more
Inspector Spacetime from Google - Google Translate for engineers working with motion
Captionfy.io - Captionfy is a free Youtube community captions platform with a subtitles/captions editor that you can use to create captions for any public Youtube video.