CDT Labs
Extensions

Tools that live in your browser

They show up right where the work already happens — on the YouTube video, in the Gmail thread, on the page you’re reading — and stay out of the way the rest of the time.

No accounts to create Nothing you put through them is kept A real free tier on every one

For students

Turning lectures and videos into something you can actually revise from.

For people who live in their inbox

Email, and the replies nobody has time to get right.

More of what we’re building, from PaperEar and DogEar Study to Statement Reader, is a whole app rather than an extension. See the apps in progress →