I Tested 5 Open-Source NotebookLM Alternatives — Here's What Actually Works
Google's NotebookLM is great. But handing your research notes, PDFs, and meeting transcripts to Google's cloud is a hard sell for a lot of people — especially when those documents contain client data, unpublished research, or internal strategy. So I spent a weekend testing five open-source alternatives. Three things mattered: can I docker compose up in under 10 minutes, does the podcast feature actually work offline, and what breaks first? Here's what I found. The Contenders Project Deploy Time Min VRAM True Offline License Open Notebook (lfnovo) ~8 min 8 GB Yes MIT Notex (smallnest) ~3 min 4 GB Yes Open source KnowNote (MrSibe) ~2 min 4 GB Yes Open source NotebookLM-Local (nagaforcloud) ~15 min 8 GB Qwen-3 4B bundled Open source InsightsLM (phsphd) ~30 min 8 GB Yes N8N SUS license 1. Open Notebook — The One to Beat git clone https://github.com/lfnovo/open-notebook cd open-notebook docker compose up -d Eight minutes from git clone to the web UI on localhost:3000 . It ships with 18+ model providers pre-configured — Ollama, OpenAI, Claude, DeepSeek, Gemini, all selectable per notebook. The podcast generator supports 1-4 speakers with different voices, and it runs entirely offline when you point it at an Ollama backend. What works: Document ingestion is fast — SurrealDB's vector + full-text index handles 200-page PDFs without choking Model switching is genuinely useful — Claude for deep analysis on one notebook, local Qwen for quick summaries on another Podcast quality with 2 speakers is close to NotebookLM's. 4 speakers is still rough. What breaks: Citation highlighting is still being rebuilt (work in progress as of June 2026) Single-user only — no team/workspace isolation built in Docker required. No native binary. 2. Notex — Single Binary, Zero Dependencies Notex is written in Go. You download a single binary (~25MB) and run ./notex . That's it. No Docker, no Python venv, no database setup. It supports PDF, TXT, MD, DOCX, HTML, audio, and YouTube/Bilibili URLs as so