The best interactive learning in the world. Free for everyone.

Duolingo and Brilliant proved short, hands-on lessons work. Together, we're bringing them to every subject, in every language.

A note from Colin

The expensive part of great learning just disappeared.

Hi, I'm Colin. For seven years I've been building Uxcel, an interactive design-education platform that grew to half a million learners and Fortune 500 teams around the world. It taught me what Duolingo, Brilliant, and Mimo know: people learn from short, hands-on lessons that answer back.

It also taught me the cost. One great lesson takes a writer, a designer, an engineer, and weeks. So interactive learning stays behind a subscription, and only for the subjects a company can sell.

Agents change that. Your agent writes the lesson on your side, so there's nothing for us to charge for. What's left is making every part of a lesson great: the katas, the visuals, the translations, the examples the agent learns from. No one company can do all of that. learn.ninja is at its best as the sum of its parts, each built by the people who know it best.

Pick the part that's yours. I answer every pull request.

C
Colin PaceFounder, learn.ninja

Where help goes furthest

Nine parts. Each its own craft.

Pick the one you know best. The three marked Proposal first touch every lesson, so they start as an idea, not a pull request.

Read CONTRIBUTING.md and pick a good first issue. We answer every pull request within a week.

Built in the open, by people like you.

Everyone who has landed a change on GitHub, and everyone helping without one. The next circle is yours.