AI knowledge tools with a free plan

Figure and bar: visits/mo, estimate · year: online since

1. #5C

   Craft Docs

   Writes and organizes notes and documents built from nestable blocks, with daily notes, tasks, offline apps and pages that can be shared on the web.

   89.1k
   Active
   From $8/mo
2. #6T

   Tango Playbooks AI

   Records workflows and generates step-by-step guides with screenshots and descriptions.

   68.6k
   Active
   From $15/user/mo
3. #10S

   Smart Noter

   Records lectures and meetings, transcribes the audio and turns it into notes, summaries, flashcards and quizzes.

   42.7k
   Active
   Free plan
   2024
4. #11M

   Mintlify

   Hosts self-updating documentation and knowledge bases that agents and LLMs can access and search.

   34.9k
   Active
   From $450/mo
5. #12A

   aNotepadMCP · sign-in

   Browser-based notepad for writing, formatting and sharing notes via public, private or password-protected links, with PDF and Word export.

   28.5k
   2009
6. #13O

   Onyx

   Open source AI chat platform that searches your docs, apps and knowledge base to answer questions with grounded responses.

   27.3k
   Active
   From $20/user/mo
7. #15G

   GitBook

   Hosts documentation with tools to detect stale content and verify accuracy against product changes.

   20.3k
   Active
   From $65/mo
   2014
8. #17R

   Revideo.io

   Searches across 12 platforms to find where videos are reposted and traces clips to their original source.

   15.8k
   Active
   From $8.50/mo
9. #19L

   LinerMCP · sign-in

   Searches academic research, generates citations, and drafts professional documents with cited sources.

   12.8k
   Active
   From $14.99/user/mo
10. #20T

    Tana

    Outliner workspace that stores notes, tasks and meeting transcripts as linked nodes with typed fields, plus an assistant that acts on them.

    11.4k
    Active
    From $20/user/mo
    2021
11. #24I

    Inqvey

    Generates market research results in minutes by simulating target audience responses using calibrated AI models.

    5.2k
    Active
    From $49/mo
    2025
12. #25C

    CapacitiesMCP · sign-in

    Turns notes, tasks and sources into linked objects, and surfaces places where notes mention each other without a link.

    4.6k
    Active
    From $9.99/mo
    2022
13. #26L

    LilysAI

    Summarizes YouTube videos, audio, PDFs, articles and web pages into structured notes with timestamps and key points.

    4.1k
    Active
    From $3.99/mo
14. #27D

    Dust

    Connects company knowledge and tools so teams can create, share, and run AI agents across workflows with human oversight.

    3.7k
    Active
    From ≈ $34/user/mo
15. #28R

    Recall

    Saves and organizes content from podcasts, videos, and articles, then answers questions from your collected sources.

    3.4k
    Active
    From $10/mo
    2022
16. #29S

    Summify

    Builds searchable knowledge pods from videos, podcasts, documents, and voice notes to use across multiple AI tools.

    3.3k
    Active
    From $8/mo
    2024
17. #31E

    E-LabusMCP · sign-in

    Explains each number on an uploaded lab report photo or PDF and tracks how markers change over time.

    2.3k
    Active
    From $19.99/mo
    2012
18. #32K

    Kapa AI

    Ingests and retrieves unstructured knowledge from multiple sources to provide accurate context for AI agents.

    2.1k
    Active
    Free plan
19. #33Y

    Yaps

    Transcribes speech to text, takes notes, reads text aloud, and translates—all processing locally on your device.

    2k
    Active
    From $12/mo
    2026
20. #36A

    AmassMCP · sign-in

    Answers research questions by searching papers, trials, patents and regulatory records, citing the record behind each claim.

    1k
    Active
    From $9/mo
    2022
21. #37M

    Meet Fennie,Your AI Study Assistant

    Generates personalized study plans, quizzes, and flashcards from course syllabi, adapting daily based on student performance.

    805
    Active
    From $4.99/mo
22. #39S

    Swellpulse

    Researches companies and generates positioning, competitive intelligence, and ICP analysis for product marketers.

    620
    Active
    From $12/mo
23. #41K

    Korey Coding Agent HandoffsMCP · sign-in

    Converts rough notes and Slack discussions into structured development tickets and keeps them synchronized with team progress.

    528
    Active
    From $99/mo
    2025
24. #42N

    NewsCatcherMCP · open

    Searches and streams news articles from 140,000 sources with entity resolution and real-time monitoring.

    490
    Active
    From $50/mo
25. #43H

    HokAIMCP · open

    Asks up to ten questions about your work and returns a ranked short list of AI tools from its directory, each with reasons.

    463
    Active
    From $5 once
    2026
26. #44R

    ReadGlim

    Curates and summarizes high-signal technical content from 50 sources into a ranked daily feed for engineers.

    460
    2026
27. #45K

    Keenious Pro

    Searches academic literature and explains research papers through conversational AI across nearly 100 languages.

    403
    From $10/mo
28. #48C

    ChatYT

    Chat with YouTube videos to get summaries, ask questions, take notes, and export to PDF.

    289
    Active
    From $1 once
29. #51C

    CoChat

    Searches academic papers, verifies citations against real sources, and organizes research findings in a collaborative workspace.

    201
    Active
    From $9/mo
    2025
30. #53C

    Cue AI

    Converts tasks, notes, and routines into actionable plans with calendar integration and scheduled briefings.

    195
    Active
    From $9.99/mo
31. #54A

    AI JSONMedic

    Repairs invalid JSON from AI tools, removing markdown fences, fixing quotes and commas, and handling truncation.

    195
    Active
32. #56T

    TweetsmashMCP · open

    Searches, labels and exports your saved X bookmarks, sends scheduled digests, and syncs them to Notion, Google Sheets or Zotero.

    190
    Maintained
    From $7/mo
    2022
33. #57M

    MDflowMCP · sign-in

    Stores markdown files in shared workspaces with a browser editor, tasks from checkboxes, public knowledgebase links, and API and MCP access.

    182
    Active
    From ≈ $5.61/mo
34. #59C

    ChatExport

    Exports ChatGPT conversations to PDF, markdown, HTML, or text on iPhone with offline encryption.

    181
    Active
    From $7.99/mo
35. #60G

    GM Assistant

    Transcribes and analyzes tabletop RPG session recordings into structured notes with NPCs, locations, and story recaps.

    180
    Active
    From $0.72 per use
36. #62W

    Web AnatomyMCP · sign-in

    Researches competitor websites, captures their page sections and scores them against fixed criteria to produce design patterns for a page.

    170
    Active
    From ≈ $44/mo
    2026
37. #63B

    BackrowMCP · sign-in

    Records lectures and meetings, transcribes them live, and turns transcripts into notes, flashcards, quizzes and study guides.

    165
    Active
    From $9.99/mo
38. #64F

    FasteroMCP · sign-in

    Connects warehouses and business tools, answers natural-language questions with the query behind each result, and flags metric changes with Slack alerts and drafted follow-ups.

    163
    Active
    From $20/user/mo
39. #66D

    DimeADozen.ai

    Generates research-backed business validation reports with market data, comparable companies, and go/no-go verdicts.

    150
    Active
    From $9 once
40. #67S

    StudyAI

    Generates study notes, mind maps, practice quizzes and flashcards from uploaded PDFs and past papers, with spaced repetition scheduling.

    146
    Active
    From $7.50/mo
41. #70S

    Somarizer

    Summarizes text, PDFs, and videos; paraphrases and humanizes writing; checks grammar and generates citations.

    142
    Active
    From $12/mo
42. #71A

    AutEngMCP · open

    Writes and edits technical documents in Markdown, rendering Mermaid diagrams and KaTeX math from a text prompt.

    140
    Maintained
    Free plan
43. #72S

    SearchQ

    Routes questions to optimal AI models, fact-checks answers across multiple models, and synthesizes verified responses with configurable privacy levels.

    130
    Active
    Free plan
44. #73S

    StudiGEMS

    Extracts syllabus deadlines and generates study guides, flashcards, and practice quizzes from course materials.

    130
    Active
    From $4/mo
45. #74G

    Gistr

    Captures and organizes learning from videos, podcasts, and articles with AI-assisted note-taking and cross-source linking.

    124
    Active
    From $10/mo
46. #75I

    I Ching Oracle

    Generates I Ching hexagrams and interpretations to reflect on questions and life decisions.

    111
    Active
    From $4.99/mo
47. #76I

    InohMCP · sign-in

    Builds English vocabulary flashcards with pronunciation practice and spoken review through Claude, plus browser, Obsidian and Raycast word capture.

    110
    Active
    From $3.99/mo
48. #78N

    NeverWrite

    Stores markdown notes and files locally, with AI agents that draft and restructure content as reviewable changes.

    106
    Active
    Free