ChatPDF
ChatGPT
Perplexity.ai
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.

JSON Formatter & Validator
DevTools Advanced
JSONFormatter.org
FreeFormatter
JSON Editor Online
SmallDevTools
TheDevTools
FOSS tools for developers

Which is more popular?
Based on our record, NotebookLM seems to be more popular. It has been mentioned 10 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | notebook.google.com | developertools.tech |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.

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An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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 DeveloperTools.Tech since Apr 2023.
When comparing NotebookLM and DeveloperTools.Tech, you can also consider the following products.

Chat with any PDF! Join millions of students, researchers and professionals to instantly answer questions and understand research with AI
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ChatGPT is a powerful, open-source language model.
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A collection of developer tools in one place in your browser
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Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON
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