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1. 25
   D

   dblpdblp.org
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2. 27
   S

   ScienceOpenscienceopen.com
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3. 24
   BB

   BASE (Bielefeld Academic Search Engine)base-search.net
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4. 28
   C

   Cerebrumaskcerebrum.org
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5. 23
   D

   Dimensionsdimensions.ai
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6. 29
   C

   CiteSeerXciteseerx.ist.psu.edu
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7. 22
   LM

   Lit Mind Mapslitmindmaps.com

   Lit Mind Maps is grounded literature AI for Masters and PhD students.

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8. 30
   CM

   Crossref Metadata Searchsearch.crossref.org
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9. 21
   R

   ResearchRabbitresearchrabbit.ai

   ResearchRabbit analyzes papers users select and recommends related research to support literature discovery.

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10. 31
    OE

    OpenAIRE Exploreexplore.openaire.eu
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11. 20
    K

    Keeniouskeenious.com

    Keenious helps students and researchers find published academic research and understand complex literature with AI guidance.

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12. 32
    OR

    Open Research Knowledge Graphorkg.org
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13. 19
    OK

    Open Knowledge Mapsopenknowledgemaps.org

    Open Knowledge Maps creates AI-driven visual overviews of research topics to help researchers, students, and practitioners identify relevant resources.

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14. 33
    CP

    Connected PapersConnected Papers
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15. 18
    IA

    Iris.aiiris.ai

    Iris.ai describes its platform as helping enterprises connect, orchestrate, evaluate, and deploy agentic RAG AI workflows.

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16. 17
    I

    Incitefulincitefulmed.com

    Inciteful analyzes citation networks to help researchers discover relevant academic literature.

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17. 16
    E

    Elicitelicit.com
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18. 15
    U

    Undermindundermind.ai

    Undermind describes itself as an AI co-researcher that finds relevant scientific literature for researchers.

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19. 14
    TL

    The Lenslens.org

    The Lens connects scholarly and technological knowledge, including patents and scholarly works, to support discovery, analysis, decision-making and partnering.

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20. 13
    S

    Scitescite.ai

    Scite helps researchers discover and evaluate scientific literature through Smart Citations that show whether later studies support, contradict, or mention a…

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