NotebookLM Organizer: KastorFlow for Gemini Notebook

Save AI chats, YouTube and web pages to Gemini Notebook (NotebookLM), then organize, tag, automate and share your notebooks.

NotebookLM answers from your sources, so its answers are only as good as what you give it. KastorFlow looks after that part: bringing material in many at once, keeping hundreds of items in order, and showing what is missing or out of date. Your notebooks stay in your own account, and the working copy stays in your browser. Your content reaches our servers only when you use an AI feature, which passes it to our AI and search providers without saving it, or when you publish a podcast episode. Bring material in, many at once • Paste many links, upload a CSV file of links, pick from your open tabs, or add items from an RSS feed. It checks there is room before it starts. • Add every video of a YouTube playlist, a channel's recent uploads or a search, each as its own source or merged into one. • Capture a video's frames with its transcript, so slides and on-screen text come in too. • Save a conversation from an AI chat app, the page you are on, the text you select, or a post from a social site. Keep hundreds of items in order • Folders, collections and tags that work across every notebook. • Find duplicates and delete many at once. • Press Ctrl+K (Cmd+K on a Mac) to search every notebook, or see them all as a map. • Move, copy and merge across notebooks. See what is missing or out of date • Audit a notebook: each source scored, weak ones flagged, missing kinds shown, and the gaps filled with what you approve. • Build a research notebook on a topic, reviewing every find before it is imported. • Refresh pages that changed. Scheduled refreshes wait for your approval. Study, create and share • Send flashcards straight into an Anki deck. • Sync a vault folder from Obsidian in as sources, and send answers and artifacts back as Markdown. • Generate Studio artifacts in batches and download them all at once. • Publish Audio Overviews as podcast episodes with your own RSS feed. • Save reports and tables to Google Drive, or download them as Markdown, PDF or CSV. • Post to team chat. You see each message, and the channel it goes to, before it is sent. Automate • Rules that import, tag, file, audit and refresh on their own. One switch pauses every rule. Work with your AI agents • Connect an AI app on your computer (MCP) to the notebooks you pick. It can read and ask them, add and tag sources, and run your rules, within your plan's limits. Anything it sends out waits for your approval. Works where you do • Small buttons inside NotebookLM, a popup for quick saves, a side panel that stays open while you browse, and a full dashboard for bulk work. • Light and dark modes. Plans KastorFlow is free to install and use. Pro and Pro+ plans raise the usage limits and add more tools, and each paid feature shows its plan label. • Pro: $7 a month, or $3.99 a month billed yearly ($47.88). • Pro+: $9.99 a month for your first 3 months, then $11.99 a month. Or $7.99 a month billed yearly ($95.88) for your first year, then $9.59 a month billed yearly ($115.08). Subscriptions renew automatically. You can cancel at any time and keep your plan until the paid period ends. Privacy Your notebooks stay in your own NotebookLM account, and our working copy lives in your browser. The extension reads what is on a page only when you use one of its tools there; on supported sites, its buttons look at the page layout to find their place. We don't sell your data. AI features send the content you act on to our servers and to Gemini. Full policy: https://kastorflow.com/privacy KastorFlow is an independent product. It isn't made, endorsed or sponsored by Google. NotebookLM and Gemini are trademarks of Google LLC.