Z:gnu-www-ja-categories--fb291b-Free software is software that/en

Free software is software that comes with permission for anyone to use, copy, and/or distribute, either verbatim or with modifications, either gratis or for a fee. In particular, this means that source code must be available. &ldquo;If it's not source, it's not software.&rdquo; This is a simplified description; see also the full definition.