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.

Refactor.io
Figstack
PullRequest.com
GitLive
Azure DevOps
codebeat
Codacy
CodeStream helps development teams resolve issues faster, and improve code quality by streamlining code reviews inside your IDE

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 | codestream.com |
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In their own words, as submitted to SaaSHub.

No description of NotebookLM yet.
CodeStream enables asynchronous communication among developers on your team, anywhere. Review changes in the context of the full source tree, using your favorite keybindings and environment. Use a simple shortcut to highlight your code and CodeStream will automatically assign a reviewer based on...
What each product offers, as listed by its team.

Possible disadvantages
Possible disadvantages
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
Development teams who heavily rely on IDEs like Visual Studio Code, IntelliJ, and others. It is particularly useful for remote teams that require robust code review and communication tools to maintain effective collaboration.
Walkthroughs and reviews on video.
Google made a new AI note app - NotebookLM review
More videos
CodeStream Code Review Inside Your IDE
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using NotebookLM and CodeStream. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

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After using this with my development team for a few weeks, we grew to love it. Product works amazing for its purpose and really helps developers communicate about our code.
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 CodeStream since Mar 2021.
When comparing NotebookLM and CodeStream, 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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Share your code instantly for refactoring and code review
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ChatGPT is a powerful, open-source language model.
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