InterSub is a browser extension designed for language learning and skill acquisition. It offers interactive dual subtitles and instant word translations on popular streaming and educational platforms like YouTube, Netflix, Prime Video, Udemy, Coursera, LinkedIn Learning, and TED. InterSub helps users learn new words easily while watching videos, automatically saving viewed words to a personal vocabulary.
Browser extension for language learning with dual subtitles and instant translations.
- Learning English, Spanish, and other languages while watching shows on YouTube and Netflix.
- Install the InterSub browser extension. Watch videos on supported platforms. Use dual subtitles for native and target languages. Hover over words for instant translations. Review saved words in your personal vocabulary.

AI language learning platform for faster speaking fluency through personalized AI conversations.


Accent training app with Hollywood coaches and AI feedback for clear English speaking.


Language learning toolbox for Netflix, YouTube, books, and websites with dual subtitles and AI.


AI-powered English learning platform for children with playful lessons and voice-based interaction.


Gurully – Accurate, Real-Exam Level Practice for English Proficiency Tests


Online language learning platform with tutors and AI-powered practice.


AI language learning app for speaking and listening practice through conversations.


AI-powered language learning and assessment platform with AI tutors and assessments in 60+ languages.


AI-powered language learning app with personalized tutors and conversation-based lessons.








