
This is fundamentally incompatible with the aim of protecting users' freedom to change the software. Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. For both users' and authors' sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions.

And you must show them these terms so they know their rights.įor the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software. You must make sure that they, too, receive or can get the source code. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others.įor example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you received. To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software and charge for them if you wishthat you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.


When we speak of free software, we are referring to freedom, not price. The licenses for most software and other practical works are designed to take away your freedom to share and change the works.īy contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program-to make sure it remains free software for all its users. If nothing happens, download the GitHub extension for Visual Studio and try again. If nothing happens, download Xcode and try again.

If nothing happens, download GitHub Desktop and try again. GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.
