Cairn Youtube Course Trac Chrome extension icon

Cairn Youtube Course Trac

📦 v1.0.0
💾 107KiB
📅 2026-04-28
View on Chrome Web Store

Chrome will indicate if you already have this installed.

Overview

Cairn is a Chrome extension for people working through university lecture series on YouTube — Stanford CS, MIT OCW, and the rest.

— Tracks your progress automatically, to the second. No buttons to click.
— Syncs across devices when you sign in with Google.
— Shows short notes left by other learners at the exact moment they posted them.
— Notes are anchored to a second in the lecture, not threaded into a chat.
— Anonymous nicknames.
— Community-curated course catalog.
— Anyone can add a course from YouTube playlist.
— Works fully offline as a guest. Migrate to an account later.

Tags

Productivity/education social-media video productivity/education

Privacy Practices

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

🔐 Security Analysis

This extension hasn't been security-scanned yet.

Google Translate

39M+ users
View translations easily as you browse the web. By the Google Translate team.
Productivity/education

Endnote Click

5M+ users
Fast, one-click access to millions of research papers.
Productivity/education
Easily create mathematical equations, formulas and quizzes. Intuitively type or handwrite, with no tricky math code to l…
Productivity/education