The code behind Google’s Chrome browser has always been open source—it’s known as the Chromium project. The Android port has thus far been more locked down, but that changes today with a big commit from the development team. Chrome for Android is now almost entirely open source, and that could mean some cool new browsers are on the way.
On the desktop side, there are a bunch of browsers that are based on Chromium, for example Flock, Opera, and Yandex.
Chrome For Android Is Now Almost Completely Open Source After Huge Code Dump was written by the awesome team at Android Police.