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.

mabl
Ghost Inspector
Leapwork
TestMu AI (Formerly LambdaTest)
Katalon
DevTest
TestProject
Functionize combines natural language processing, deep-learning ML models and other AI-based technologies to empower your team to build tests faster that don’t break and run at scale in the cloud.
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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NLM
NotebookLM
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| Website | notebook.google.com | functionize.com |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.

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Overall verdict
Why this product is good
Recommended for
No analysis of Functionize yet.
Walkthroughs and reviews on video.
Google made a new AI note app - NotebookLM review
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How Functionize Improves Software Testing
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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 / 3 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 Functionize since Mar 2021.
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