An offline NotebookLM alternative
NotebookLM is genuinely good — but it is a chat box, and everything you put in it goes to Google. MindMap Chat keeps the idea and drops both of those constraints.
The two differences that matter
1. A living map, not a transcript
In a chat interface the structure of what you're learning exists only in your head; scroll far enough and it's gone. Here the structure is the document. Every node is a first-class AI context: ask about one concept, generate a note that stays pinned to it, or let the AI restructure a branch — and review the change before it lands.
2. Nothing is uploaded
MindMap Chat runs against a local model (via Ollama or LM Studio, set up for you in a couple of clicks). Your sources, notes and questions never leave the machine. The database is AES-256 encrypted at rest, and semantic search runs entirely on-device — so the app keeps working on a plane, on a train, or on a locked-down network.
| NotebookLM | MindMap Chat | |
|---|---|---|
| Where your content goes | Google's servers | Stays on your device |
| Interface | Chat + document panel | Visual map; every node is an AI context |
| Works offline | No | Yes, with a local model |
| Account required | Google account | None |
| Encrypted at rest | Not under your key | AES-256 with your passphrase |
| Import existing maps | — | Freeplane, XMind |
| Price | Free | Free |
Where NotebookLM still wins
Being honest is more useful to you than a sales pitch: NotebookLM ingests long PDFs and audio effortlessly, needs zero setup, and its cloud models are stronger than what most laptops can run locally. If you're summarising a stack of PDFs and don't mind Google reading them, it's a fine tool.
Pick MindMap Chat when the structure of what you're learning matters, or when the material is something you'd rather not upload.
Try it
Free, no account. Download for Windows, macOS, Linux or Android — or check whether your machine can run a local model.