Tool & Platform
Beginner
Perplexity AI
Perplexity · AI Learning & Research
An AI-native search engine whose answers cite sources — handy for quickly verifying questions that come up while studying.
📖 AI Learning & Research
AI search, document Q&A and translation — leverage for study and research · 6 resources (6 checked)
🌱 AI Fundamentals📐 Machine Learning🔬 Deep Learning🧠 Large Language Models💬 Prompting & Apps💻 AI-Assisted Coding🤖 AI Agent Development🔌 MCP Protocol📚 RAG & Retrieval🚀 Deployment & Serving🏗️ Hands-on Projects🎨 Multimodal & AIGC🛠️ Open Source & Tools📰 Community & News🧰 Tools & API Platforms🤖 AI Chat Assistants🎬 AI Video Generators🎨 AI Image & Design⌨️ AI Coding Tools📊 AI Productivity🎵 AI Audio & Music🧠 AI Agent Platforms📖 AI Learning & Research
Tool & Platform
Beginner
★ Featured
NotebookLM
Google · AI Learning & Research
Google's AI note and research tool — upload PDFs, web pages and videos to ask questions, generate summaries, flashcards and podcasts, with cited answers. Generous free tier; our most recommended study aid.
Tool & Platform
Beginner
Metaso AI Search
秘塔科技 · AI Learning & Research
An ad-free AI search that aggregates academic and web sources with citations — good for papers and research. Free to use.
Tool & Platform
Beginner
Immersive Translate
沉浸式翻译 · AI Learning & Research
A bilingual side-by-side browser translation extension — the tool for reading English docs, papers and subtitles. Core features free; the standard for accessing first-hand English material.
Tool & Platform
Beginner
ChatDOC
ChatDOC · AI Learning & Research
A document Q&A tool — upload PDF/Word, ask questions and jump to source paragraphs. Good for papers and contracts. Free tier has quota.
Tool & Platform
Beginner
Felo
Felo · AI Learning & Research
An AI search engine that turns results into cited reports, with multilingual search. Free tier is daily-limited.
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