Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
Mate Translate - Ultimate translation app for Mac, iOS, Chrome and many more
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.
TransKey – Chat Translator App - TransKey – Chat Translator App is a rich-featured keyboard extension, enabling you to translate your messages inside any social media application like WhatsApp, iMessage, Facebook, Email, Twitter, Instagram, and many others.
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.
TRANSKEY – translator keyboard - TRANSKEY – translator keyboard is an application that is designed as a keyboard translator, enabling you to convert your smartphone keyboard in any appropriate language in no time.