Gaia is B2G OS's user interface and suite of default apps: it includes the lock screen, home screen, dialer, and other applications. Essentially, Gaia is a set of complex web apps that runs on top of the B2G OS platform. This set of articles covers all you need to know to contribute to the Gaia project. In this guide, we will take you through an effective workflow for contributing to Gaia — and by
![Gaia - Archive of obsolete content | MDN](https://cdn-ak-scissors.b.st-hatena.com/image/square/e51bd6dc33a667d35eb4146698a198e55ff92d6e/height=288;version=1;width=512/https%3A%2F%2Fdeveloper.mozilla.org%2Fstatic%2Fimg%2Fopengraph-logo.72382e605ce3.png)