Open Source NotebookLM Alternatives

Open Notebook is an AI-assisted note-taking and research platform built for people who want genuine control over their data and their tools. Unlike cloud-first Obsidian alternatives or proprietary tools like NotebookLM, it lets you choose which AI models interact with your content and exactly what those models can see.

It's aimed at researchers, students, and self-directed learners who accumulate more material than they can process. If you have hundreds of saved links and PDFs you'll never get to, Open Notebook is designed to help you actually use that backlog.

Key capabilities:

• Podcast generator: Converts your notes into audio episodes with configurable voices, speakers, and structure. Useful for reviewing material while away from a screen.
• AI-powered notes: Summarizes content, surfaces insights, and helps you build on existing notes without replacing your own thinking.
• Privacy controls: You decide which information the AI can access. Nothing is exposed by default.
• Multi-format ingestion: Accepts links, PDFs, plain text, PowerPoint files, and YouTube videos, so you're not limited to a single content type.
• Model flexibility: You're not locked into one AI provider. Choose the models that fit your workflow and comfort level.

What sets it apart from tools like Logseq or Joplin is the combination of structured AI assistance with explicit privacy boundaries. Most AI note tools either expose everything to a third-party model or offer no AI at all. Open Notebook sits in between: AI-assisted, but on your terms.

It's released under the MIT License, making it fully self-hostable and auditable.

SurfSense is a self-hostable knowledge management tool built for teams who want the core appeal of NotebookLM – asking questions across a collection of documents – without handing their data to a third party or hitting usage caps.

The core idea is straightforward. You connect sources, and SurfSense builds a searchable knowledge base you can query through a chat interface. What sets it apart is the breadth of what counts as a source:

• Web content via a browser extension that saves pages directly to your knowledge base
• Documents including PDFs, slides, and text files
• YouTube videos with transcript ingestion
• Notion, OneDrive, and other integrations for pulling in existing work
• Podcast and audio files with automatic transcription

On the AI side, SurfSense doesn't lock you to one provider. You can point it at OpenAI, Anthropic, or any compatible model, including locally hosted ones. Teams that already use AnythingLLM or similar tools for document chat will recognize the pattern, but SurfSense leans harder into multi-source ingestion and team sharing rather than single-user document Q&A.

Because it's self-hosted, your documents stay on your infrastructure. There are no per-query fees tied to the platform itself, though you'll still pay your chosen LLM provider for API calls. That trade-off suits teams handling sensitive internal knowledge – legal, research, product documentation – where cloud-based tools create compliance friction.

The interface supports organized spaces, so different teams or projects can maintain separate knowledge bases without everything collapsing into one pile. Search pulls from across all ingested content, and responses cite their sources so you can trace answers back to the original material.

Deta Surf is an intelligent notebook that revolutionizes how you research and organize information by bringing your files and the web directly into your stream of thought. This open-source browser combines AI capabilities with personal data control to create a unique research experience.

Key Features:

• AI-powered research that actually makes sense of your browser tabs and research
• Generate personal notes from any media with less scrolling and copying than traditional browsers
• Explore complex content including YouTube videos, PDFs, foreign languages, and scientific diagrams
• Create interactive graphs and applets without writing code
• Vertical tab organization in a clean sidebar layout

Privacy & Control:

• Local data storage - your information stays on your device
• Open source core with code available on GitHub
• Open intelligence - integrate with your choice of LLMs or run local models
• Import/export capabilities for complete data management

Enhanced Productivity:

• Citations that link directly to sources
• Personalized notebooks with sketch capabilities
• Dark mode for comfortable viewing
• Drag-and-drop support for PDFs, images, and documents
• Surflets - create custom mini-apps for explanations

Perfect for researchers, students, and knowledge workers who want to think better, not search more.