ChatPDF
Perplexity.ai
ChatGPT
Obsidian
Claude AI
Humata AI
elicit
AI-first notebook by Google, available in the U.S., blends large language models and user-chosen data. Apply for access to explore intelligent insights and enhance your note-taking experience.

git clone --recursive on steroids, by Square

Which is more popular?
Based on our record, NotebookLM seems to be more popular. It has been mentioned 10 times since March 2021.
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| Website | notebook.google.com | github.com |
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Google made a new AI note app - NotebookLM review
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Recommendations tracked on public social media and blogs since March 2021.

Gemini Notebook only generates content based on your sources and will not hallucinate or provide false or unrelated information. I cannot overemphasize the importance of this platform while following through with this certification... - Source: dev.to / about 1 month ago
You just need a few summaries occasionally. Standing up Ollama, a model, and an extraction pipeline to summarize five PDFs is overkill. If privacy isn't the constraint, a free web tool does it in seconds — ChatPDF and NotebookLM if you... - Source: dev.to / 2 months ago
Last year I was heavily into Perplexity but for most of 2026 I've actually been using NotebookLM a lot more. Perplexity is still useful for just daily news, but when I want to research, when I want to summarise, when I want to learn...... - Source: dev.to / 4 months ago
Tracking git-fastclone since Mar 2021.
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A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.
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Claude is a next generation AI assistant built for work and trained to be safe, accurate, and secure. An AI assistant from Anthropic.
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Unlock AI insights for your files instantly. Ask, learn, and extract data 10X faster with Humata.
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