Firefox is definitely an exception. Libre Office is simply copying features from MS Office, and is rarely used in commercial settings anyway. Chrome is open s

Firefox is definitely an exception. Libre Office is simply copying features from MS Office, and is rarely used in commercial settings anyway. Chrome is open source (well, Chromium, Chrome is not), but it is basically 100% developed by a commercial company which does not generally accept community contributions. I don't know enough about GIMP, Inkscape and Blender to give an opinion on how well they can be held up as examples of Open Source community tools that can replace commercial tools. Edit: actually, thinking more about this, Firefox and other browsers are much more a tool for web development than a tool for users directly - the functionality that users use is much smaller in terms of implementation than the functionality that web developers use (the layout and JS engines, and the debuggers, profilers & other development .