Browser Development • Re: Linux Pale Moon with Qt toolkit

While we cannot bundle GTK because of viral GPL licensing.

GTK is under LGPL not GPL. According to the terms of that license we can bundle GTK as long as a user is able to replace our GTK library with their own (basically for us that just means don’t statically link it so they can swap out the library file with their own).

That is why Mozilla can bundle GTK in their Flatpak and AppImages without being forced to relicense the whole codebase under the GPL. Because GTK is not under the GPL to begin with.