GNU IceCat Web Browser
GNU IceCat is based on the Mozilla Firefox source code. While the basic Mozilla Firefox source code is free software, and we thank them for their significant contributions to the community, some non-free files are distributed in the Firefox source tree, and Firefox can recommend non-free plugins. IceCat is entirely Free Software. In addition, CAcert.org, already used for https://savannah.gnu.org, was added to the builtin root certificates.