Chromium OS is an open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web. Here you can review the project's design docs, obtain the source code, and contribute. To learn more about the project goals, read the announcement blog post.

Source code

• First time?  Use the Chromium OS Quick Start Guide
• Read the Chromium OS Developer Guide to learn how to build the source
• Overview of the source
• Browse the source
• Coding Style
• Chromium OS Python Style Guide
• Chromium OS Shell Style Guide
• For other languages, follow the Google Style Guide
• For third-party code, follow the external project style guides
• Testing
• Licenses

Developer docs

• Chromium OS Developer Guide
• High-Level Developer FAQ
• Firmware (Coreboot / U-Boot) Overview and Porting Guide
• Embedded Controller (EC) Development
• All How Tos and Troubleshooting
• Poking around Your Chrome OS Device
• Design docs

Hardware Reference docs and schematics

• USB Type-C debug dongle and sniffer for USB-PD communications
• USB Type-C to DisplayPort Adapter
  
• USB Type-C to HDMI Adapter
  
• 45W USB Type-C Charging Adapter Control Board
• Cable and Adapter Tips and Tricks
  
• USB Type-C functional testing board