Notes & Research

NotebookLM

Free

4.3

Google's AI notebook that lets you chat with your documents and sources.

• Chat with your documents
• AI-generated summaries
• Audio overviews (podcasts)

Completely free

Obsidian

Freemium

4.3

Local-first knowledge base and note-taking app with AI plugins.

• Bidirectional note linking
• Graph view of your knowledge
• Local storage (private)

Free for personal use, Sync $4/mo

Napkin AI

Freemium

4.1

Turn your text into visuals and diagrams automatically with AI.

• Text to visual generation
• Auto diagram creation
• Flowchart generation

Free beta, Pro coming soon

Reflect

Paid

4.7

AI-powered note-taking app that helps you think and write better.

• AI-assisted note writing
• Backlinks and connections
• Daily notes

$10/mo billed annually

Roam Research

Paid

4.0

Networked note-taking tool for non-linear thinking and knowledge management.

• Bidirectional links
• Daily notes journal
• Block references

$15/mo or $165/yr

Elicit

Freemium

4.7

The AI research assistant that analyzes research papers for you.

• Automated literature reviews
• Extract core data from PDFs
• Semantic search for abstract concepts

Free limited • Plus from $12/mo

SciSpace

Freemium

4.6

AI copilot to decode, summarize, and understand research papers.

• Chat with PDF research papers
• Explain complex scientific math/text
• Multi-language research support

Free tier available • Premium from $12/mo

Mem

Freemium

4.4

The self-organizing workspace powered by AI.

• Self-organizing AI workspace
• Smart search & semantic surfacing
• AI assisted writing and editing

Free basic • Mem X from $14.99/mo

Genei

Paid

4.3

AI-powered research and note-taking tool designed to accelerate reading.

• AI-generated document summaries
• Keyword and entity extraction
• Cloud-based document management

14-day free trial • Basic from £4.99/mo