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PaidGenei
AI summarization and notetaking for researchers.
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FreeDeepSeek
Open-source reasoning chatbot with strong math.
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FreemiumConnected Papers
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FreeResearchRabbit
Visual citation maps for literature discovery.
4.7
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FreemiumPhind
AI search engine purpose-built for developers.
4.7
Coding AIVisit
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FreemiumPaper Digest
AI paper summaries and literature reviews.
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FreemiumPerplexity Pro
Pro AI answer engine with sources and Spaces.
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FreemiumPerplexity AI
The answer engine that cites its sources.
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FreemiumChatPDF
Chat with any PDF document.
4.6
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FreemiumExplainpaper
Highlight any paper passage and get a plain-English explanation.
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FreemiumScholarcy
Summarize research papers into flashcards.
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FreemiumYou.com
Privacy-first AI search engine with agents.
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FreeSemantic Scholar
Free AI search across 200M scientific papers.
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FreemiumElicit
AI research assistant for literature reviews.
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PaidScite.ai
See how every paper has been cited — supported or disputed.
4.4
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FreemiumUndermind
Deep-search scientific agent for literature.
4.3
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FreemiumHumata
Ask questions across all your documents.
4.2
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PaidKagi
Premium ad-free AI search engine.
4.2
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