Caption - Open-source captioning tool to help find the right subtitles.
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.
Subtly - Learn English with smart subtitles on movies and TV shows
Bialect - Learn languages faster with stories.
Bazarr - Bazarr is a companion application to Sonarr and Radarr that manages and downloads subtitles based on your requirements.
Clozemaster - Learn a language through mass exposure to useful vocabulary in context.