The source code from the Mozilla® project is indeed Free Software, however the binaries that they release include additional non-Free Software. Also, they distribute and recommend non-Free Software as plug-ins.
Thanks MJ, but specifically which files included in Firefox 3.0.1 does GNU not consider Free, and why?
Thanks for answering.
This is a list of the files that are removed from Firefox® 3.0.1 source:
As you can see, it is mostly the branding/trademark and the name of the application which are non-free, by the GNU definition of Free Software. How can it be free when we need permissions from Mozilla® Corporation! :)
Also there are many non-free plug-ins and to list them all would require some researching. However Mozilla® Corporation have not defined any rule on discouraging non-free plug-ins, and rather their binary does recommend non-free plug-ins when the user visits certain sites.
Please note that I don't speak officially for GNU or FSF, and this is only my humble understanding.
I am a human being, submitter to will of God (The Almighty Creator),
unique, humanitarian, humble, free, unplugged, ethical, INTP-type of
personality, patient, high-principled,"realistic perfectionist", take
responsibility of my intentions & actions, and believe most
people's intentions are generally good. I value human life ever so
greatly, and promote dialog between religions & civilizations.
Free-thinker & activist for justice, human rights, and freedoms,
including software-freedom. I am a student of knowledge, more
specifically student of Islam & Comparative Religion, Epistemology,
Philosophy, Logic & Mathematics. All-in-all, in one word: Muslim