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Popular tool to chat with PDFs and other documents, giving summaries and cited answers, with a free daily tier and no-signup start.
Browser extension that adds a PDF viewer/chat sidebar to ChatGPT, Claude, and DeepSeek for reading and querying documents.
AI Chrome extension and dashboard that solves quiz questions in-browser and generates notes, flashcards, and mind maps for students.
AI knowledge base that saves, summarizes and connects articles, videos, podcasts and PDFs into a graph you can chat with.
No public pricing
No public pricing
Free trial available
- ✦Chat with PDFs, Word, PowerPoint and text files
- ✦Summaries with cited sources
- ✦Multi-file chats via folders
- ✦Any-language upload and chat
- ✦Extra tools: AI writer, detector, flashcards, slides
- ✦No-signup quick start
- ✦Split-screen PDF viewer alongside AI chat
- ✦Zoom and text-copy tools for PDFs
- ✦Upload history tracking
- ✦Capture-and-ask screenshot querying (paid)
- ✦Custom prompt support (paid)
- ✦AI-Generated Notes
- ✦Summarize YouTube videos with AI
- ✦Podcast to notes AI
- ✦Meeting notes AI generator
- ✦Summarize PDFs with AI
- ✦Quizzes & Flashcards Generation
- ✦Mind Maps Generation
- ✦AI Chat with Notes
- ✦Custom Note Styles
- ✦Browser extension that solves quiz questions via popup or sidebar
- ✦Works across major LMS platforms like Canvas, Blackboard, and Moodle
- ✦AI note taker and lecture note converter
- ✦AI flashcard and mind map generators
- ✦PDF, video, and slide summarizers
- ✦Screenshot or Ctrl+V paste question solving
- ✦One-click saving of articles, videos, podcasts, PDFs
- ✦AI summaries of saved content
- ✦Automatic tagging and knowledge-graph linking
- ✦Chat with your knowledge using GPT, Claude or Gemini
- ✦Spaced-repetition quizzes
- ✦Browser extension, web and mobile apps; API/MCP access
- →Understand research papers
- →Study and homework help
- →Review contracts and reports
- →Translate and summarize documents
- →Researchers reading and querying PDFs via AI
- →Students studying documents with AI help
- →Professionals reviewing reports using ChatGPT/Claude/DeepSeek
- →Summarizing YouTube videos for quick insights
- →Converting lectures and meetings into structured notes
- →Creating flashcards and quizzes from study materials
- →Generating mind maps for complex topics
- →Summarizing research papers efficiently
- →Answering quiz questions live within an LMS platform
- →Turning lecture recordings into structured notes
- →Summarizing long PDFs or videos before an exam
- →Building flashcards and mind maps from course material
- →Building a personal 'second brain'
- →Summarizing long content to save time
- →Chatting with your own saved knowledge
- →Retaining what you read via spaced repetition