Mentor by building
People learn on software that has real users, real constraints and real review — not on exercises. Contributors ship to a live codebase and get their pull requests read line by line.

Mentor by building
People learn on software that has real users, real constraints and real review — not on exercises. Contributors ship to a live codebase and get their pull requests read line by line.
Build in the open
Source, architecture decisions and the reasoning behind them are public, including the parts that turned out wrong. The reasoning is the teaching material.
Solve a real problem
Every project here exists because someone hit the problem and found no good open alternative. Nothing is built purely as a teaching exercise.
Keep it free to run
These are unpaid projects, so they are designed to cost almost nothing to operate — otherwise they quietly die when the enthusiasm does.
Start with Contributing. The short version: pick an issue in one of the repositories under github.com/codrlabs, open a pull request, and expect a review that explains itself.
Questions go to open@codrlabs.com.