Contrary to some reports, everything that makes Android “Android”, including all the core platform components and libraries needed to port Android to new devices will be open sourced under commonly used, industry standard licenses, says Google.
What is open
I confirmed with three different Google employees at the Google I/O conference in San Francisco that the core Android platform will be 100% open source. Even multimedia codecs, which historically are held close to the vest will be open. Except where noted, everything will use the Apache software license (ASL v2). This is the same open source license used by projects like the Apache HTTP server, Tomcat, Harmony, and many other large projects in the open source community.
There are two exceptions to the Apache license rule: