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.
Language Learning with Netflix - Use movies as study material for language learning
YouTube Transcripts - Turbocharged SEO with cheap, fast & accurate transcripts
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
Universal Word - Translate YouTube subtitles into multiple languages
Caption - Open-source captioning tool to help find the right subtitles.