Comment 363 for bug 269656

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Christopher Blizzard (blizzard-0xdeadbeef) wrote :

> Are you sure you understand the principles of open source software? By
releasing it under GPL, Mozilla say that they don't mind if someone
takes their work and rebrands it, or else they would have released it as
normal proprietary software

Mozilla doesn't release Firefox under the GPL. We use the Mozilla Public License (MPL.) The MPL is a copyleft license in the spirit of the GPL but it has some important differences.

One of those differences is that the MPL has terms you must meet, but the license under which you may distribute the resulting binaries may be a license other than the MPL. In this sense, the MPL is more like the BSD license, but has a patch/source code release requirement at the file level.