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There is a common misconception that open source software must be given away for free, but this is incorrect.<ref>http://www.gnu.org/licenses/gpl-faq.html#DoesTheGPLAllowDownloadFee</ref>  Although most open source software is indeed available for free, with the authors usually charging for consulting and other services, there is no obligation for them to do so.

There is a common misconception that open source software must be given away for free, but this is incorrect.<ref>http://www.gnu.org/licenses/gpl-faq.html#DoesTheGPLAllowDownloadFee</ref>  Although most open source software is indeed available for free, with the authors usually charging for consulting and other services, there is no obligation for them to do so.

Open source software is also known as "free software". However, its advocates acknowledge that name is misleading in that it sounds, at first hearing, as if the software costs nothing. "Free", in this context, means users are free to modify the software for their own purposes. As its advocates like to say, it means "free speech, not free beer".

Open source software is also known as "free software". However, its advocates acknowledge that name is misleading in that it sounds, at first hearing, as if the software costs nothing. "Free", in this context, means users are free to modify the software for their own purposes. As its advocates like to say, it means "free speech, not free beer" (see also [[free software movement]]).

==Examples==

==Examples==