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.
"Tell us what you think about Google products and features by participating in our user research studies. You'll get a token of our appreciation plus the chance to help build something you'll love."
"With Flutter, Google's UI framework Material Design is built right in, giving you access to useful widgets and smooth animations and transitions across all platforms. You can play with it right here on CodePen."
"The App Defense Alliance is a collaboration between Google, ESET, Lookout, and Zimperium. The App Defense Alliance was created to ensure
the safety of the Google Play Store. Together with our partners we aim to quickly find Potentially Harmful Applications (PHAs)
and take the appropriate action to protect users."