 IcedTea provided free software alternatives for the few remaining proprietary sections in the OpenJDK project.In May 2008, the Fedora 9 and Ubuntu 8.04
distributions included IcedTea 6, based completely on free and open source code.Fedora 9 was the first version to be shipped with IcedTea6, based on the OpenJDK6 sources from Sun rather than OpenJDK7.