What is Kortex used for?

Kortex is a free Chrome extension for Gemini Notebook, formerly NotebookLM, that imports sources, organizes notebooks, automates tasks and exports content. It is a good fit for students organizing research for exam prep and researchers collecting web sources into notebooks.

Yes. Kortex has a free plan, and paid plans start at $9.99 per month.

Is Kortex open source?

No. Kortex is proprietary (closed-source) software. In the Note Taking category, open-source options include SiYuan, NoteGen and EdgeEver.

What are some alternatives to Kortex?

Kortex competes with NotebookLM, mymind and Glasp.

Kortex: features, pricing and alternatives

About Kortex

Kortex is a browser extension that adds missing workflow features to Gemini Notebook, which the page says was formerly called NotebookLM. In one click you can send sources into a notebook from ChatGPT conversations, X threads, YouTube videos or any highlighted web page, and you can export notebooks and sources to PDF, Markdown, plain text or a ZIP of everything.

For organization it adds collections and tags across notebooks and a workspace search opened with Ctrl K. Automation rules run when a notebook receives a tag, for example creating a study guide, generating an audio overview and adding it to a podcast feed. A newer Schedules feature, listed as Pro and in private beta, uses the Kortex MCP server so an AI assistant can set up hourly, daily or weekly runs that ask your notebooks a question and save the answer or audio.

Kortex runs in Chrome with your own Google sign-in and operates while the browser is open. The extension is free with a free plan that needs no card, and a Pro plan is listed on the pricing page. The site also offers documentation, a roadmap, free planners and prompt builders and an affiliate program.

Key features

One-click import from ChatGPT, X, YouTube and web pages
Collections and tags across notebooks
Automation rules triggered by tags
Export to PDF, Markdown, text or ZIP
Workspace search with a keyboard shortcut
Scheduled notebook queries through MCP (Pro beta)

Good fit for

Students organizing research for exam prep
Researchers collecting web sources into notebooks

Tags: chrome-extension; notebooklm; gemini; knowledge-management; research; automation; mcp; export

Kortex: questions and answers

What is Kortex used for?: Kortex is a free Chrome extension for Gemini Notebook, formerly NotebookLM, that imports sources, organizes notebooks, automates tasks and exports content. It is a good fit for students organizing research for exam prep and researchers collecting web sources into notebooks.
Is Kortex free?: Yes. Kortex has a free plan, and paid plans start at $9.99 per month.
Is Kortex open source?: No. Kortex is proprietary (closed-source) software. In the Note Taking category, open-source options include SiYuan, NoteGen and EdgeEver.
What are some alternatives to Kortex?: Kortex competes with NotebookLM, mymind and Glasp.