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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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Deep English
✓ verifiedFreemium
Story-based English fluency program with free listening lessons and a paid live-practice membership with an AI voicebot.
355K visits/mo
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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
Free trial available
No public pricing
Free trial available
No public pricing
Core features
- ✦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
- ✦Story-based listening lessons
- ✦Shadowing practice for flow
- ✦AI chatbot/voicebot conversation practice
- ✦Pronunciation checking
- ✦Live small-group Zoom speaking sessions (members)
- ✦Spaced-repetition vocabulary
- ✦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
- →Self-learners practicing conversational fluency
- →Business teams training employees in new languages
- →Students supplementing classroom language education
- →Improving English speaking fluency
- →Practicing conversation with AI
- →Building listening comprehension
- →Joining live speaking practice sessions
- →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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