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Language REACTOR
✓ verifiedFreemium
Browser extension that adds dual subtitles and click-to-lookup to Netflix and YouTube for learning languages.
1.7M visits/mo
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Talkpal
✓ verifiedFreemium
AI language coach offering conversational practice with real-time feedback across 130+ languages.
1.5M visits/mo9.9K saves
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Gliglish
✓ verifiedFreemium
Conversational AI language tutor for practicing speaking and listening through voice roleplay in many languages.
295K visits/mo39K saves
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Semantic Scholar
✓ verifiedFree
Free AI-powered academic search engine indexing 236M+ papers, for researchers wanting semantic literature discovery and an augmented reader.
7.9M visits/mo13K saves
Pricing
No public pricing
No public pricing
Free trial available
No public pricing
No public pricing
Core features
- ✦Dual subtitles on Netflix and YouTube
- ✦Click-to-lookup word translations
- ✦Saveable vocabulary items
- ✦Playback controls for language study
- ✦Works as a browser extension
- ✦Conversational practice with AI tutors
- ✦Real-time personalized feedback and corrections
- ✦Dialogue, sentence, word, call, photo, and debate modes
- ✦Voice interaction with natural AI voices
- ✦Grammar courses and language certificates
- ✦130+ languages on web, iOS, and Android
- ✦Voice conversations with an AI teacher
- ✦Real-life situation roleplay
- ✦Speech recognition and pronunciation practice
- ✦Reply suggestions and adjustable speed
- ✦In-context word explanations
- ✦Grammar feedback
- ✦AI-powered semantic search across 236M+ papers
- ✦Semantic Reader for augmented, contextual paper reading
- ✦Free public API for paper search and metadata
- ✦Author and topic discovery
- ✦Citation graph exploration
- ✦Beta program for new features
Use cases
- →Learn a language while watching shows
- →Look up and save new words from video
- →Study with dual subtitles
- →Self-learners practicing conversational fluency
- →Business teams training employees in new languages
- →Students supplementing classroom language education
- →Practice speaking a new language
- →Improve pronunciation and listening
- →Roleplay travel and everyday scenarios
- →Get instant grammar feedback
- →Researchers searching scientific literature across disciplines
- →Developers building applications on top of scholarly data via the API
- →Students exploring citation networks for a topic
- →Librarians and academics needing free literature discovery tools
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