Documents and notes

Kaptex - NotebookLM Extension alternatives

2 open-source projects that already do this job. Free to use - not free to run, which is what the numbers on the right are for.

The full assessment →

The projects

webclipper/web-clipper6,824licence unclearWeb browser extension for clipping web content into various note-taking services like Notion, OneNote and Joplin.Open on GitHub mika-cn/maoxian-web-clipper1,217MITWeb extension to capture and save webpage content locally or to other services, focused on reliable clipping.Open on GitHub

What you give up either way

Polished cross-site capture coverage and edge-case parsing for many AI sites
Official support and priority feature requests
Lifetime deal pricing and built-in user trust/brand
Possible private NotebookLM integration behaviors or undocumented endpoints

An open-source project doing the core job proves a replacement is possible. It does not prove it matches Kaptex - NotebookLM Extension, and it does not prove anyone has run it for a month. How we decide.