CodeCrafters

We help engineers get really good at their craft. Build your own Redis, Git, Docker, SQLite from scratch. Become a top engineer.

CodeCrafters.io launches a learning platform organized by languages that offers hands-on Build-your-own-X challenges (e.g., Git, Redis, Docker, SQLite) to help engineers master tool internals, design large codebases, and improve language-specific skills; the platform adds features for teams, including private leaderboards, a Slack app, and expensing workflows for engineering enablement.

From the original launch (Jun 2022) — may be outdated.

Step through CodeCrafters’s homepage year by year — the pitch, the product and the design, as the web remembers them.

Each year opens the Wayback Machine capture closest to that date.